Natural selection is a process by which certain traits within a population are favored and become more common over time, while others become less common or disappear.
Why does natural selection occur?It occurs because individuals with certain advantageous traits are more likely to survive and reproduce, passing on those traits to their offspring. This results in adaptation, where the population gradually becomes better suited to its environment through the accumulation of beneficial traits.
The theory of natural selection was proposed by Charles Darwin, a British naturalist, in his 1859 book "On the Origin of Species." Darwin observed that individuals within a population show variation in traits and that some of these traits provide benefits in surviving and reproducing in their environment.
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The diagram below shows three families. Which set of parents has the highest fitness?
A
the parents of the single child
B
the parents of two children
C
the parents of the big family
Answer:
C. the parents of the big family
Explanation:
In biology, an organism that produces as much offspring is said to have a higher fitness compared to its counterpart. It is said to be biologically fit than the rest.
Therefore, in the same vein, the parents that has the biggest family is the most biologically fit of the three families.
Question 1 A heterozygous yellow-seeded plant is crossed with a homozygous yellow seeded plant. i. ii. Question 2 Complete the punnet square and write the genotypic and phenotypic ration for the possible offsprings. (3 marks) Genotypic ration Phenotypic ration What is the probability of having a pure breeding green seeded offsprings (2 marks) What is the probability of having a yellow-seeded plant in F2 generation, when a true breeder from F1 is crossed with a non-true breeding yellow seeded plant? (2 marks)
Answer:
Explanation:
To solve this problem, let's represent the heterozygous yellow-seeded plant as "Yy" and the homozygous yellow-seeded plant as "YY."
i. When crossing a heterozygous yellow-seeded plant (Yy) with a homozygous yellow-seeded plant (YY), we can set up a Punnett square to determine the possible offspring genotypes:
Y Y
y Yy Yy
y YY YY
ii. The genotypic ratio is 2:2 or 1:1 for the possible offspring genotypes: Yy and YY.
The phenotypic ratio is also 2:2 or 1:1 for the possible offspring phenotypes: yellow-seeded (YY and Yy).
Question 2:
To determine the probability of specific outcomes, we need additional information about the parental genotypes and their inheritance patterns. Please provide the genotypes of the true breeder from F1 and the non-true breeding yellow-seeded plant for a more accurate calculation.
Where does warm water accumulate in the Pacific Ocean during El Niño
Answer:
east
Explanation:
What if you had a population with all 5 colors again, but the red butterflies made the predator very ill, would you expect similar results? Explain waht you would expect and why
The predator has the ability to associate the prey to the sickness, and that the predator can distinguish the color difference.
The Viceroy's color pattern has been evolved because the natural selection favoured them. The viceroy butterfly camouflage as the monarch butterfly as well as the exhibit Mullerian mimicry where as these two toxic species has the mimic each other for their benefit and by time natural selection has been favoured these.
Natural selection has been the process by which the reproductively fitest has the populations of the living organisms survive, adapt and change. The viceroy butterfly has the brush-footed butterfly having the dark orange colour with the black veins and row of the white spots on the border of its wings.
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PLS HELP, I WILL MARK BRAINLIEST I NEED HELP
Answer: 0%
Explanation: white eyes is rr and red eyes is RR and if it had Rr it would still be red.
So the boxes filled in are rr and RR and offspring are Rr Rr Rr Rr which means there is no chance of a female offspring with white eyes (I think)
prefix meaning "ring-shaped"
Answer:
The prefix meaning "ring-shaped" is "cyclo-".
Would the construction of this master planned community impact the carrying capacity of the states ecosystem?
Answer:
To bulid. This building will help people and bring high quality
Explanation:
It could provide some kind of system. I support the to bulid and one piece of evidence that supports my claim is it could help people with a type of system. The building can provide help for people.Also can provide lots of good things to come with it.
If you drink a large amount of water, your interstitial fluid may become_________compared to your intracellular fluid (assume that there has not been a major change in the solute/solvent concentrations of intracellular fluid).
If you drink a large amount of water, your interstitial fluid may become hypotonic compared to your intracellular fluid.
Hypotonic solutions are those that have more concentrations of solvent and less amounts of solute as compared to another solution or cell placed inside it. The movement of solvent occurs out of these solutions. The osmotic potential of such solutions is high.
Interstitial fluid refers to the fluid present around the spaces between cells. This fluid is helpful in the transporting oxygen and nutrients to the cells and also is involved in waste removal. The fluid becomes lymph fluid as it enters the lymph vessels.
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PLEASE HELP !! ILL GIVE 40 POINTS ; PLUS BRAINLIEST !! DONT SKIP ANSWER.
Answer:
D
Explanation:
Since algae is the start or the foundation of the food chain, this would mean that animals that eat the algae will be more commonly found here. And where their are consumers, predators are to follow.
Hope this helps :)
Answer:
D
Explanation:
Coin tosses can demonstrate the effects of genetic drift. Imagine that heads and tails are two alleles in a population. Consider each coin toss to represent a member of the population. Write down the statements that describes the effect.
Answer:
Smaller populations have a greater chance of having one allele expressed disproportionately.
Explanation:
Genetic drift is defined as the a change in how frequently a gene allele occurs in a given population as a result of random sampling.
This random sampling is similar to having a coin toss that gives heads or tails.
Genetic drift has the tendency of making smaller populations have a greater chance of having one allele expressed disproportionately.
This is because when individuals in a small population mate there is a greater probability that an evolution will have more far reaching effects.
In a large population the effect will be less pronounced.
The enzyme lipase breaks down lipids into fatty acids but does not break down starch into glucose molecules.What can be inferred about enzymes?
Lipase is a fat-hydrolyzing enzyme. It is produced in the pancreas, mouth, stomach, adipose tissues, etc. It is used to break down fats present in food so they can be absorbed in the intestines.
some examples of lipase enzymes are Corynebacterium acnes and Staphylococcus aureus.
Amylase is the enzyme that breaks down starches and carbohydrates into sugars.
Where do heterotrophs get phosphorus from?
Answer:
Heterotrophs rely on organic material and remineralize nutrients such as nitrogen and phosphorus when they are in excess of requirements.
Which is a biotic factor?
Answer:
a living organism that shapes its environment
Explanation:
hope this helps
Cellular respiration is a multipathway process that converts an organic substrate into cellular energy. The majority of energy in the form of ATP is not synthesized until electrons are transferred by ________ and ________ to the electron transport pathway.
Answer:
This is by co enzymes NADH and FADH2(adenine dinucleotide hydrogen and falvin adeninedinucleotide hydrogen. They are the co-enzymes that convey (electrons in )hydrogen atoms from the Kreb's cycle to the matrix of the mitochondria.They are not enzymes,but rather, enhances the work of enzymes.
These co enzymes are oxidized by the loss of hydrogen atoms.The hydrogen spits into electrons and protons in the matrix.The protons is pumped into the intramembranes by the proton motive force produced from the electron transport chains,and returned to the matrix, to generate electrochemical gradient needed for energy to be used by ATPase synthase for ATPs production
Explanation:
Compare What do complex organisms
have that makes them different from simple
organisms
ing Company
Answer: They have different characteristics
Explanation:
If a 10 base-pair long DNA molecule consists of 30% Thymine, how many of each of the 4 different nucleotides is present
Answer:
Explanation:
Based on Chargaff's Rule:
There is the same amount of Adenine (A) as Thymine (T) and there is the same amount of Guanine (G) as Cytosine (C)
30% of 10 = 3 There are 3 Thymines (T) , so there are 3 Adinines (A)
10 - (3 + 3) = 4
There are 2 Guanines (G) and 2 Cytosines (C)
After Interphase, order the remaining steps of mitosis as illustrated in Diagram 4-1.
Answer:
prophase, metaphase, anaphase, telophase and cytokinesis
Answer: All the ones i know are these hope they help
prophase, metaphase, anaphase, telophase and cytokinesis
Explanation:
4. Which of the following defines a biological community?A. a group of interacting populations that occupy the same geographic area atthe same timeB. anything that is part of an organism’s environment that causes a reaction inthe organismC. an area where an organism lives
A biological community is made by a group of organims interacting in the same habitat, being the better definition for a biological community the one in the alternative A. a group of interacting populations that occupy the same geographic area at the same time.
PLEASE HELP BIOLOGY!
Answer:
1. label the molecule below:
-1 ) phosphate group
-2)ribose
-3) adenine
2. Label ATP/ADP cycle:
(label 'em clockwise)
- ATP
-Water
- Phosphate
-ADP.
We have come to know that the primary component of the plasma membrane is the phospholipid. What makes these molecules so unique and the perfect building block for a bilayer is ...
Group of answer choices
a phospholipid has both polar and nonpolar regions
a phospholipid is able to firmly attach to the neighboring phospholipid
all choices are correct
a phospholipid is both positively and negatively charged
can animals communicate ?
Answer: Animals communicate using signals, which can include visual; auditory, or sound-based; chemical, involving pheromones; or tactile, touch-based, cues. Communication behaviors can help animals find mates, establish dominance, defend territory, coordinate group behavior, and care for young.
N
What makes up
chromatin?
A. DNA only
B. DNA and proteins this
C. DNA and ribosomes
D. DNA and RNA
The option B is correct. Chromatin is made up of DNA and proteins.
What is chromatin?Chromatin refers to a mixture of DNA and proteins that form the chromosomes found in the cells of humans and other higher organisms. Many of the proteins — namely, histones — package the massive amount of DNA in a genome into a highly compact form that can fit in the cell nucleus.
The function of this complex, the chromatin, is to package and reduce the size of DNA/RNA (tightly wind it so it takes up less space), regulate DNA replication and gene expression and to protect the DNA from damage.
The chromatin structure is formed by the association of DNA and histones. With the help of histone proteins, chromatin organizes DNA into chromosomes. Histones are adaptor proteins that help the DNA structure. They form a complex structure around the DNA, giving the chromosome a more compact shape.
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Antibiotics interfere with prokaryotic cell functions. Streptomycin is an antibiotic that interferes with the proper binding of tRNA to mRNA in prokaryotic ribosomes. Which of the following best predicts the most direct effect of exposing prokaryotic cells to streptomycin?
A. Amino acid synthesis will be inhibited.
B. No mRNA will be transcribed from DNA
C. Posttranslational modifications will be prevented.
D. Synthesis of polypeptides will be inhibited.
Answer:
The correct answer is D. Synthesis of polypeptides will be inhibited.
Explanation:
Streptomycin is an aminoglycoside antibiotic. Aminoglycosides are actively transported across the bacterial membrane, irreversibly bind to one or more receptor proteins specific to the 30S subunit of bacterial ribosomes, and interfere with the initiation complex between messenger RNA and the 30S subunit. DNA can be misread, leading to the production of non-functional proteins; polyribosomes separate and are unable to synthesize proteins. This results in accelerated transport of aminoglycosides, thereby increasing the breakdown of the cytoplasmic membranes of the bacteria and consequent cell death. Streptomycin specifically binds and inhibits the ribosomes of bacteria because the ribosomes of prokaryotic cells are not the same as those of eukaryotic cells. Specifically, it blocks the normal activity of the initiation complex, thereby halting protein synthesis and, on the other, it causes the incorporation of other amino acid different than the one encoded.
A medicine or substance that inhibits the growth and infection of bacteria and other agents are called antibiotics. They treat and prevent microbial or bacterial infections.
On direct exposing of prokaryotic cells to streptomycin, the option D. synthesis of polypeptides will be inhibited.
The mechanism of antibiotics can be explained as:Streptomycin is a type of antibiotic that is aminoglycoside in nature which binds to the protein receptors and interferes with the initiation complex present between the ribosomal unit and mRNA.The interference can cause misleading information read by the DNA and as a result producing non-functional proteins or no synthesis of proteins.This misleading information will result in an increased amount of aminoglycosides transportation across the membrane of bacteria and its degradation.It binds to the ribosomal unit of bacteria as they are unique to them and not eukaryotes so that they do not harm eukaryotic organisms.Therefore, antibiotics block polypeptide synthesis.
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Help me and ill give you brainliest :)
Explain the three states of water and how it changes state. Use terms melt, boil, sublimation, evaporation, deposition.
-this is science-
water can exist in three states; liquid, solid and gases.
Explanation:
At temperature below zero degree Celsius, water exists as a solid but as it absorbs temperature from Its surroundings, it undergoes melting and turns into liquid water. More application of heat makes it boil leading to the evaporation and vapourisation of water molecules( note: evaporation occurs at all temperature).
Answer:
give them brainlist
Explanation:
The below are characteristics of prokaryotes except
No membrane-enclosed nucleus
Complex cellular structure
Mostly not harmful
Smaller than eukaryotes
Abundant in nature
Which steps were included in the process of cloning Dolly? Check all the apply.
The steps that were steps were included in the process of cloning Dolly are;
cell from the udder of a sheep was removed.Developing cells were placed in another sheep.The DNA from the egg of a sheep was removed.The DNA from the udder cell was added to an egg cell.Process of cloning dolly
A cell from a mature Finn Dorset ewe's mammary gland was used to clone Dolly. She was made by Wilmut and his group of scientists at Roslin by fusing a mammary cell with an unfertilized egg cell that had had its nucleus removed.
In order to create a clone, researchers insert the DNA of an animal's somatic cell into an egg cell that has had its nucleus and DNA removed. The egg develops into an embryo that shares the same genes as the cell donor. The embryo is then placed inside the uterus of an adult female to continue to develop.
Therefore, the process of cloning a dolly require using a DNA from the sheep.
The question is incomplete, the completed part can be found on brainly website.
A cell from the udder of a sheep was removed.
O Developing cells were placed in another sheep.
Organisms with desirable traits were crossed.
O The DNA from the egg of a sheep was removed.
The DNA from the udder cell was added to an egg cell.
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Question 23 (2 points)
(06.05 MC)
A red blood cell is in the umbilical vein of a fetus. Where will it flow next, in the proper order? (2 points)
Od
Ductus venosus; right atrium; vena cava
Ductus venosus; vena cava; right atrium
Ductus arteriosus; right ventricle; aorta
Ductus arteriosus; aorta; right ventricle
A red blood cell in the umbilical vein of a fetus will flow next in the proper order as follows: Ductus venosus; vena cava; right atrium.The ductus venosus is a blood vessel that connects the umbilical vein to the inferior vena cava.
It allows oxygenated blood from the placenta to bypass the liver and enter the systemic circulation of the fetus. The red blood cell will pass through the ductus venosus, which acts as a shunt, directing the oxygenated blood towards the vena cava.
From the vena cava, the blood will enter the right atrium, which is one of the four chambers of the fetal heart. The right atrium receives deoxygenated blood from the body and the oxygenated blood from the umbilical vein.Finally, the blood will leave the right atrium and continue its circulation through the fetal heart, where it will be pumped to the lungs for oxygenation.
However, since the lungs are not fully functional in the womb, the blood is redirected through the foramen ovale and ductus arteriosus to bypass the pulmonary circulation.In summary, the correct order of flow for the red blood cell in the umbilical vein of a fetus is: Ductus venosus; vena cava; right atrium.
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Explain what is meant by the statement, "Cells are very different, yet very similar."
Write it in 125 words
Describe the mechanism of glycolysis in detail
The process of Glycolysis is a catabolic process in which two molecules glucose goes through a ten- step pathway and yield two molecules of pyruvate . It is a major part of carbohydrate metabolism .
Mechanism Of Glycolysis
The glycolysis is also known as EMP pathway and it is involved in both aerobic and anaerobic conditions .There are two phases in the mechanism of glycolysis in which 5 reactions takes place in each phase and the process of glycolysis takes place in cytosol
Preparatory phase refers to the generation of two molecules of glyceraldehyde 3-phosphate from one molecule of glucose which further goes into the payoff phase . In this phase two molecules of ATP are used and two regulatory enzymes were involved in this reaction .
Payoff phase refers to the further break down of two molecules of glyceraldehyde3-phosphate to two molecules of pyruvate . In this phase four molecules of ATP and two molecules of NADH are generated . In this phase only one regulatory enzyme is involved which is the breakdown of PEP to pyruvate .
Both the phases of glycolysis takes place in the cytoplasm and there are three enzymes that involved in regulating the glycolytic pathway .This process is also known as the catabolic process .
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A plant's water supply is now deeper in the ground.
What process allows the roots to grow longer?
A. interphase
B. photosynthesis
C. mitosis
D. meiosis