Which of the following is NOT consistent with the concept of natural
selection?
A. Individual organisms are able to change their genetic adaptations in
order to better survive in changing environments.
B. More offspring are produced than can survive in an environment
(overproduction of offspring).
C. There is genetic variation within populations.
D. Organisms with beneficial variations are more likely to survive and
reproduce, passing on their genes to subsequent generations.
Click to choose your answer helow:
Answers
Answer:
A. Individual organisms are able to change their genetic adaptations in
order to better survive in changing environments.
Explanation:
Natural selection can be defined as a biological process in which species of living organisms having certain traits that enable them to adapt to environmental factors such as predators, competition for food, climate change, sex mates, etc., tend to survive and reproduce, as well as passing on their genes to subsequent generations.
Simply stated, natural selection entails the survival of the fittest. Therefore, the species that are able to adapt to the environment will increase in number while the ones who can't adapt will die and go into extinction.
The statements which are consistent with the concept of natural selection includes;
I. More offspring are produced than can survive in an environment (overproduction of offspring). This ultimately implies that, the more offsprings that are reproduced by the parent organism, the more likely are they to survive.
II. There is genetic variation within populations. This simply means that tere is a better chance of having good or beneficial traits being passed from the parent organism to her offsprings.
III. Organisms with beneficial variations are more likely to survive and reproduce, as well as passing on their genes to subsequent generations.
Related Questions
Which of the following are cortical lobes of the brain? (choose all that apply)
•frontal
•occipital
•perineal
•temporal
Answers
Answer:
frontal, occipital, and temporal
Explanation:
Answer:
•frontal
•occipital
•temporal
Explanation:
examples of organisms or animals with radial symmetry
Answers
Answer:
cnidarians, which include jellyfish, anemones, and corals.
Happy to help
Brainliest plz
Explanation:it’ll help my mood:)
What is Zygote and Embryo ?
Answers
A zygote is a single-celled organism resulting from a fertilized egg.
An embryo on other hand is the early stage of development of a multicellular organism.
Organisms that reproduce se- xually, embryonic development is the part of the life cycle that begins just after fertilization and continues through the formation of body structures, such as tissues and organs.
An embryo is termed a fetus beginning in the 11th week of pregnancy, which is the 9th week of development after fertilization
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a researcher wanted to create a loss of function mutation for studying type i diabetes in a model animal. what mutation might mimic the effects of type i diabetes?
Answers
A loss-of-function mutation is a genetic mutation that makes a gene product less effective or entirely ineffective. In order to analyze the pathological mechanisms underlying type 1 diabetes, scientists have attempted to develop disease models utilizing mutant mice that harbor spontaneous and targeted gene mutations.
A loss-of-function mutation is a genetic mutation that makes a gene product less effective or entirely ineffective. In order to analyze the pathological mechanisms underlying type 1 diabetes, scientists have attempted to develop disease models utilizing mutant mice that harbor spontaneous and targeted gene mutations. The best mutant mice are those that exhibit diabetes, and these mice have been critical to gaining a better understanding of the molecular mechanisms underlying the disease.
To mimic the effects of type 1 diabetes, researchers would likely create a loss-of-function mutation in a gene that is critical for insulin synthesis or insulin release. Insulin is a hormone that regulates blood sugar levels, and people with type 1 diabetes have insufficient insulin production due to the destruction of the insulin-producing beta cells of the pancreas. Mutations in genes such as insulin, glucagon, and somatostatin, which are critical for the regulation of blood sugar, are frequently used to generate diabetic mouse models.
In summary, a loss-of-function mutation in a gene critical for insulin synthesis or insulin release would likely mimic the effects of type 1 diabetes. The exact gene and the nature of the mutation will vary based on the particular research objectives.
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what is the difference between bacterial and viral infections?
Answers
Answer:
The main difference is that bacteria are free-living cells that can live inside or outside a body, while viruses are a non-living collection of molecules that need a host to survive. Antibiotic drugs usually kill bacteria, but they aren't effective against viruses.
By measuring the colors of light reflected by different tree species in a forest, scientists can determine the amount of biodiversity present in different areas. Maintaining biodiversity is important because it
A.reduces the carrying capacity of a forest
ecosystem
B.guarantees that all species within a forest
ecosystem will survive
C.increases the number of predators that
control the population size of prey
D.ensures the availability of a variety of genetic
material
Answers
Maintaining biodiversity is important because it D) ensures the availability of a variety of genetic material.
Maintaining biodiversity is important because it ensures the availability of a variety of genetic material within a forest ecosystem. Biodiversity represents the variety of different species, genetic diversity within species, and the variety of ecosystems present. It encompasses the range of genetic traits and adaptations found in different species, which are essential for their survival and resilience.
By ensuring the availability of a variety of genetic materials, maintaining biodiversity helps to safeguard the resilience, adaptability, and long-term viability of species within a forest ecosystem. Therefore, the correct option is D).
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Now let's cross two plants from the first generation (F1). What flower colors do you predict in their offspring, the F2 generation?
A.
All have purple flowers only.
B.
Half have purple flowers only; half have white flowers only.
C.
Three-fourths have purple flowers only; one-fourth makes white flowers only.
D.
All have white flowers only.
Answers
Answer:
all have purple flowers only
Which of the following statements is true?
A) Saltatory conduction is seen in non-myelinated nerve fibres.
B) Nissl’s granules are found in muscle fibres.
C) Non-myelinated nerve fibres do not possess nodes of Ranvier.
D) Non-myelinated nerve fibres are completely enclosed by myelin sheath.
Answers
The statement that is true is “Non-myelinated nerve fibers do not possess nodes of Ranvier”, option c.
What are non-myelinated nerve fibers?
Non-myelinated nerve fibers are also known as unmyelinated nerve fibers or non-myelinated axons. These nerve fibers are the type of nerve fibers that lack myelin sheath around their axons. In the absence of myelin sheath, the axons of the nerve fibers appear gray. It is due to the presence of cell nuclei, mitochondria, endoplasmic reticulum, and other organelles present in the axons of nerve fibers.What are the Nodes of Ranvier?
The Nodes of Ranvier are small gaps or indentations that are found in the myelin sheath. These Nodes of Ranvier are responsible for aiding the propagation of nerve impulses through a process known as saltatory conduction. The saltatory conduction is the process by which the action potential of a nerve impulse travels through the axon of a nerve fiber in an efficient and rapid manner in the presence of the myelin sheath.Option A is incorrect because saltatory conduction is not seen in non-myelinated nerve fibers.
Option B is incorrect because Nissl’s granules are not found in muscle fibers.
Option D is incorrect because non-myelinated nerve fibers lack a complete myelin sheath.
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A mutation in a gene results in an animal that cannot make a protein that allows muscles to contract which of these is most likely to happen
Answers
Answer:
it will get weaker give water
Explanation:
feed it bread
A heritable change in a person's genetic makeup is referred to as a mutation. Changes can be substantial or negligible. Chromosomes or chromosome parts may be lost, added, duplicated, or rearranged in significant alterations. Thus, option B is correct.
What mutation in a gene results in an animal?High-energy sources like radiation or chemicals in the environment can both result in mutations. They may also emerge on their own during DNA replication. The two main kinds of mutations are chromosomal abnormalities and point mutations.
Mutations can alter an organism's phenotype, which is its outward appearance, or they can have an impact on the way DNA encodes the genetic information (genotype). When mutations happen, they might kill an organism completely or only partially.
The likelihood that a gene mutation will cause an animal to be unable to produce the protein necessary for muscles to contract is that the animal will perish before producing any progeny.
Therefore, The animal will die before having any offspring.
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The above given question is incomplete. The complete question is given below:
A mutation in a gene results in an animal that cannot make a protein that allows muscles to contract. Which of these is most likely to happen? * A. The gene will eventually be found in all animals of the species. B. The animal will die before having any offspring. C. The gene will change back to the normal form. D. The animal will pass this gene on to many offspring.
Explain how form and function are related in human cells, including examples. Use at least five sentences in your answer. The shape of a cellular structure is related to the function they have perform
Compare and contrast epithelial and muscle tissues. Use at least three sentences in your answer.
Answers
Explanation:
Form and function are intimately related in human cells. The shape and structure of cellular components are often specifically designed to carry out their respective functions effectively. For example, red blood cells are disc-shaped with a concave center, which increases their surface area for efficient oxygen and carbon dioxide exchange. Neurons have long, branching extensions called dendrites and axons, allowing them to transmit electrical signals over long distances.
Epithelial tissues are composed of closely packed cells that form protective barriers and linings in the body. They cover external surfaces (such as the skin) and line internal organs and cavities (such as the digestive tract). In contrast, muscle tissues consist of cells that are specialized for contraction and movement. There are three types of muscle tissues: skeletal muscle, responsible for voluntary movements; cardiac muscle, found in the heart; and smooth muscle, which controls involuntary movements in organs like the intestines.
Epithelial tissues primarily function in protection, absorption, and secretion. They have tightly packed cells with minimal extracellular matrix. In contrast, muscle tissues are specialized for contraction and movement. They contain long, elongated cells (muscle fibers) that can generate force. Skeletal muscle is striated and allows for voluntary movements, while cardiac and smooth muscles have different structures and functions specific to their respective roles in the body.
In summary, the relationship between form and function is evident in human cells. Cellular structures are designed with specific shapes and arrangements to perform their functions efficiently. Epithelial tissues provide protective barriers and linings, while muscle tissues enable contraction and movement. Understanding the relationship between form and function helps us appreciate the intricate design of cells and tissues in the human body.
which letter is a codon, don’t mind the option that is picked, i miss clicked.
Answers
By analysing the given picture, option (b) is correct i.e. F
Help please 100 points
Answers
Turgor pressure drops in the plant cell as a result of the water leaving the cell by osmosis in a hypertonic environment. The plant cell is currently thought to be plasmolyzed or flaccid.
What results in a plant cell's lower turgor pressure?fluid inside of a cell pushing the cell membrane up toward the cell wall. Turgor causes the stiffness of living plant tissue. decrease of turgor as a result of water loss from plant cells.
Is there an increase or reduction in turgor pressure in a hypotonic solution?Water will enter a cell by endosmosis when it is in a hypotonic medium, and the cell's turgor pressure will rise as a result. therefore the turgor pressure and the wall pressure are equal and opposing.
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i cant see
like its so smoll
crycry
Which organism has an exoskeleton?An arthropod. For example: a crab.A mammal. For example: a humanA Cnidarian: For example: a jellyfish
Answers
Humans have an endoskeleton. Jellyfish do not have a skeleton. Crab has an exoskeleton.
ANSWER: A.
That faces are somewhat special visual stimuli is supported by all these findings except that:
Select one:
a. babies prefer stimuli with vertical (left/right) symmetry over those with horizontal (up/down) symmetry.
b. babies only a few days old prefer to look at the faces of their own mother over other age-matched female faces.
c. we are better at recognizing previously seen faces than other types of visual stimuli.
d. even very impoverished line drawings can be interpreted as faces.
e. babies prefer to look at faces over other stimuli
Answers
The faces are some what special visual stimuli that are supported by most of the findings except that babies prefer stimuli with vertical (left/right) symmetry over those with horizontal (up/down) symmetry. The remaining options (b, c, d, e) are consistent with the concept that faces are unique visual stimuli.
Babies only a few days old prefer to look at the faces of their mother over other age-matched female faces. It suggests that infants have an innate preference for the unique features of human faces, which distinguishes them from other objects and faces.
Therefore, all of the options given (except option a) support the idea that faces are unique visual stimuli that are processed using a distinct neural mechanism. These findings suggest that humans have an innate preference for faces and that our ability to recognize and remember them is better than for other types of visual stimuli.
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which trace mineral is an essential component of thyroid hormones? group of answer choices iron iodine zinc chromium
Answers
The trace mineral that is an essential component of thyroid hormones is iodine, option B is correct.
Iodine plays a crucial role in the synthesis of thyroid hormones, including thyroxine \((T_4)\) and triiodothyronine \((T_3)\), which are responsible for regulating the body's metabolism. These hormones are produced by the thyroid gland and require iodine to be incorporated into their structure.
Without adequate iodine, the thyroid gland cannot produce enough hormones, leading to a condition known as iodine deficiency disorder (IDD). IDD can result in impaired growth and development, goiter (enlargement of the thyroid gland), and cognitive impairment. Therefore, ensuring sufficient intake of iodine through diet or supplementation is vital for maintaining optimal thyroid function and overall health, option B is correct.
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The correct question is:
Which trace mineral is an essential component of thyroid hormones? (group of answer choices)
A) iron
B) iodine
C) zinc
D) chromium
What is the primary cause of poor air quality in Mexico City?
O gas emissions from drilling
O pollution from car exhaust
O particulates from erosion
Odust from deforestation
Answers
Answer:
Located in the crater of an extinct volcano, Mexico City is about 2,240 metres above sea level. The lower atmospheric oxygen levels at this altitude cause incomplete fuel combustion in engines and higher emissions of carbon monoxide and other compounds
Second option: pollution from car exhaust
Explanation:
in a brightly lit room, slides are easier to read if you use ________________________.
Answers
In a brightly lit room, slides are easier to read if you use high contrast colors and large, clear fonts. High contrast colors help the text and images stand out against the background, making the content more visible even in bright lighting conditions.
For example, using a dark background with light-colored text or vice versa can significantly improve the readability of your slides. Additionally, selecting large and clear fonts ensures that the text is easily legible, allowing your audience to focus on the content without straining their eyes.
Combining these design principles will ensure that your slides are easily readable and engaging for your audience in a brightly lit room.
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Consider a lab-made protein that contains an er signal sequence at its n-terminus and a nuclear localization signal in its middle. what is the initial fate of the protein?
Answers
Other proteases in the ER quickly break down the signal sequence into amino acids when it is released from the pore. Ribosomes link a molecule to the er membrane as it is translated. However, the ribosome population is not static; is constantly moving through the ribosome.
Where can I get the signal sequence for proteins bound to the ER?The endoplasmic reticulum (ER) is a network of tubules and sacs (cisternae) enclosed by membranes that spreads throughout the cytoplasm from the nuclear membrane.
In most eukaryotic cells, the endoplasmic reticulum is the largest organelle and is surrounded by a continuous membrane. Its membrane may account for half of all cell membranes, while the region occupied by the ER (the lumen, or cisternal space) may account for 10% of total cell volume.
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Which of the following statements is TRUE regarding Frederick Griffith's experiments?a. He demonstrated that proteins serve as the genetic/hereditary material.b. His experiments relied on RNase and DNase to identify the genetic/hereditary material.c. None of the other answer options is correct.d. He demonstrated that DNA serves as the genetic/hereditary material.e. He demonstrated that (only) dead virulent bacteria cause pneumonia in mice.
Answers
The true statement regarding Frederick Griffith's experiments is d. He demonstrated that DNA serves as genetic or hereditary material.
Frederick Griffith's experiments, conducted in the 1920s, played a crucial role in understanding the nature of genetic material. In his famous experiment, Griffith worked with Streptococcus pneumoniae, a bacterium that can cause pneumonia in mice.
Griffith observed that when he injected mice with a harmless strain of S. pneumoniae (non-virulent), the mice remained healthy. When he injected mice with a virulent strain (causing pneumonia), the mice developed a fatal infection.
In his key experiment, Griffith made an interesting observation. He discovered that when he heat-killed the virulent strain of S. pneumoniae and injected it into mice along with the harmless non-virulent strain, the mice developed pneumonia and died. Furthermore, he found live virulent bacteria in the dead mice, which indicated a transformation had occurred.
Griffith hypothesized that some substance from the heat-killed virulent bacteria had been transferred to the non-virulent bacteria, transforming them into virulent ones. This phenomenon came to be known as transformation. Later research by Avery, MacLeod, and McCarty identified that the transforming substance was DNA.
Thus, Frederick Griffith's experiments demonstrated that DNA serves as the genetic/hereditary material, which was a significant breakthrough in the field of genetics and molecular biology.
Hence, option D is correct.
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1. Discuss the importance of each of the following edaphic (soil) factors to living organisms. Water, Air, Mineral nutrients
Answers
The edaphic factor includes a range of proprieties of the soil, physical, chemical, and biological that are result from biological and geological phenomena. In the case of living organisms, we have those chemical and physical properties, such as minerals and water, as well as soil aeration influence ecology and evolution of plants and in consequence, associated biota, this is because plants are the base of the food chain as well as pioneers in many cases of ecosystem structure.
Following this line of thought, we have that soil is very important, factors as simple as the consistency, very different sand from mud, impact texture and chemical composition, and in consequence the type of organisms that can settle there, we can see that in deserts (sandy soil, limited water, good nutrients), the type of plants that grow have certain characteristics, for example, they live with very few water, and in turn, they provide refuge and food for other animals in the desert, on the other hand, we have places like confers forests, where the soil is rich and water is available in the subsoil, also tend to be mountainous sites, those plants are adapted to other conditions, their roots retain soil preventing erosion, also the kind of animals that depend on them are different.
Short hair (S) is dominant to long hair (s) in cats. What would be the genotype(s) of a cat with long hair?
Answers
Answer:
(ss)
Explanation:
so we know that short hair is dominant, thus the capital (S)
and long hair is recessive, thus the lowercase (s)
So the answer is (ss).
5 Cells in a multicellular organism are shown
in the diagram.
Which statement best describes how all
of the cells shown are similar?
B
A They are all making new cells.
They are all transporting oxygen.
They are all doing photosynthesis.
They are all maintaining homeostasis
Answers
The cells in the given diagram are basically involved in the transport of the oxygen.
The correct option is option B.
The cells which are shown in the diagram belong to a multicellular organism and are the red blood cells or the RBCs or erythrocytes. They have a biconcave shape and they carry oxygen to all the tissues and the organs in our body. These red blood cells are able to carry oxygen as they have a special pigment known as the hemoglobin.
The exchange of the gases, which are carbon dioxide as well as the oxygen, takes place in the lungs. The red blood cells also take the carbon dioxide to the lungs so it can be exhaled.
Hence, the correct option is option B.
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What is the direction of the moving force of air? Responses
Answers
Answer:
Explanation:
The pressure gradient causes the air to move horizontally, forcing the air directly from a region of high pressure to a region of low pressure. The Coriolis force deflects the direction of the flow of air and causes the air to flow parallel to the isobars.
I hope this helped
What is another
way that producers
convert energy,
besides
photosynthesis?
A. chemosynthesis
B. decomposition
C. cellular respiration
Answers
Answer:
A
Explanation:
Because chemosynthesis is the biological conversion of one or more carbon-containing molecules and nutrients into organic matter using the oxidation of inorganic compounds or ferrous ions as a source of energy, rather than sunlight, as in photosynthesis. So it can only be this because decomposition is something decaying and cellular respiration is the process by which organisms combine oxygen with foodstuff molecules, diverting the chemical energy in these substances into life-sustaining activities and discarding, as waste products, carbon dioxide and water.
8. Which of the following best represents the energy flow
between photosynthesis and
cellular respiration?
a. Sunlight → photosynthesis →→ ATP → cellular
respiration →→ Glucose
-
b. Sunlight → cellular respiration → ATP →
photosynthesis → ADP
c. Sunlight → photosynthesis →→ Glucose → cellular
respiration →→ ATP
d. Sunlight → cellular respiration→ Glucose →
photosynthesis →→ATP
OD
Answers
carbohydrates, cellular respiration, ATP, light, photosynthesis, and water best represents the energy flow between photosynthesis and cellular respiration
Plants (including algae and some bacteria) employ sunlight, water, and CO2 during photosynthesis to produce sugars (carbohydrates). This reaction, which takes place in chloroplasts, results in the reduction of CO2 (gaining electrons), oxidation of water (losing electrons), and production of oxygen (O2). The usage of that O2 in cellular respiration follows. Cellular respiration takes place in mitochondria and consumes glucose and oxygen to create ATP, which is the energy source. H2O and CO2 are created.
Photosynthesis is essential to most life on Earth. Plants, microalgae, as well as some types of bacteria carry out the process by capturing solar energy to create oxygen (O2) plus biochemical power is supplied in glucose (a sugar). Consequently, herbivores get this energy from consuming plants, and carnivores get it from eating herbivores.
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Are there any parts of the human body that get oxygen directly from the air and not from the blood? Are there nuclear reactions going on in our bodies?
Answers
Answer:
The cornea is the only part of a human body that has no blood supply; it gets oxygen directly through the air. The cornea is the fastest healing tissue in the human body, thus, most corneal abrasions will heal within 24-36 hours.
Nuclear reactions do indeed occur in the human body, but the body does not use them.
Which of these is not one of Earth's layers?
A.core b.mantle c.crust d.epicenter
Answers
Answer:
epicentre is the odd one out
Explanation:
it is not part of the earths layers
pls pls pls help!! i’ll give brainliest
Answers
Answer:
materials move against a concentration gradient
Norma and Jamal are both affected by color-blindness, a trait that is sex-linked and recessive. Their genotypes can be represented by the following symbols:
Norma: XrXr
Jamal: XrY
When their daughter Jessica grew up, she married a man named Miguel who was NOT color-blind, and they had several sons and daughters. Which of these statements best describes Jessica and Miguel’s children?
Answers
Answer:
c. all their sons are colorblind
Explanation:
How do genetic connections help to organize
species?
Answers
Answer:
allows them to make evolutionary connections between organisms. Using morphologic and molecular data, scientists work to identify homologous characteristics and genes.
Explanation: