in order to contribute to evolution, why must mutations in sexually reproducing organisms occur in the sex cells and not somatic cells? choose one or more: a. mutations in somatic cells only affect the individual with the mutation. b. only the dna in sex cells gets passed to offspring in sexual reproduction. c. to contribute to evolution, the trait produced by the mutation(s) must be passed to offspring. d. mutations must occur in both the sex cells and somatic cells to be inherited

Answer:

The correct answer is - increase in frequency.

Explanation:

According to the theory of Darwin, organisms most likely survive and reproduce in an ecosystem that is able to change or adapt to the changes in the ecosystem.

According to the modern evolutionary theory that the genes that are responsible for new changes or traits that help a species to reproduce and survive in a particular environment increase in frequency and the genes do not helps decrease in frequency.

Answer:

Ecology is the study of the interactions between organisms and their environment.

Explanation:

please make as brainiest.

Numerous colleges and universities around the world, including quite a few in the United States and Canada, offer degree programs in environmental science, studies, policy, and management. Many students who later transferred to graduate school for an environmental degree may have started off in a different major.

what is Environmental science?

In order to study the environment and find solutions to environmental issues, environmental science is an interdisciplinary academic field that combines physics, biology, and geography (including ecology, chemistry, plant science, zoology, mineralogy, oceanography, limnology, soil science, geology and physical geography, and atmospheric science). During the Age of Enlightenment, environmental science developed from the disciplines of natural history and medicine. [1] Today, it offers an interdisciplinary, integrated, quantitative approach to the study of environmental systems. [2]

More social sciences are incorporated into environmental studies in order to better understand human interactions, viewpoints, and environmental policy. Engineering for increasing environmental quality in all areas is the emphasis of environmental design

Environmental scientists work to comprehend the physical, chemical, biological, and geological processes that occur on Earth and then use that understanding to comprehend how problems like alternative energy sources, pollution control and mitigation, resource management, and the effects of global warming and climate change affect and influence these processes and natural systems. Physical, chemical, and biological processes almost invariably interact with one another to create environmental challenges. Environmental scientists analyze environmental issues from a systems perspective. The capacity to relate spatial and temporal correlations and quantitative analysis are essential skills for environmental scientists. The need for a multidisciplinary approach to analyze complex environmental problems, the arrival of substantive environmental laws requiring specific environmental investigation protocols, and the growing public awareness of the need for action in addressing environmental problems were the driving forces behind the emergence of environmental science as a substantive, active field of scientific investigation in the 1960s and 1970s. The release of Rachel Carson's seminal environmental work Silent Spring[3] and the public attention given to significant environmental problems like the Santa Barbara oil spill in 1969 and Cleveland, Ohio's Cuyahoga River "catching fire" (also in 1969) all contributed to the emergence of this new field of study and raised awareness of environmental problems.

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Answer:

D

Explanation:

The answer is D threshold frequency depends on the work function of a metal

Answer:

cant seeee

Explanation:

sry pic isnt clear

Answer:

Chemical bond which enhance stability

Explanation:

When atoms react a chemical bond is being formed which makes it stable

Answer:

released by the presynaptic membrane

Explanation:

(a) The main difference between negative and positive control in prokaryotes is that in negative control, the transcription factor is a repressor that prevents transcription, while in the positive control, the transcription factor is an activator that promotes transcription.

(b) If an operon is repressible, it responds to a signal by stopping transcription. The signal molecule binds to the repressor, causing it to bind to the operator site of the operon, preventing RNA polymerase from binding and transcribing the genes.

(c) If an operon is inducible, it responds to a signal by starting transcription. The signal molecule binds to the activator, causing it to bind to the activator binding site of the operon, promoting RNA polymerase binding and transcription of the genes.

Activators and repressors are types of transcription factors that control the expression of genes by binding to DNA in the promoter or enhancer region of the gene. Activators enhance or increase the transcription of a gene, while repressors inhibit or decrease the transcription of a gene.

Activators and repressors can be regulated by various signals such as small molecules or environmental factors, which can bind to these transcription factors and affect their ability to bind to DNA and regulate gene expression. The binding of an activator or repressor to DNA can recruit or prevent the recruitment of RNA polymerase, the enzyme responsible for transcribing the gene, leading to either increased or decreased gene expression, respectively.

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it separates the inside of the cell from the environment outside and it controls substances moving in and out of the cell (selectively permeable)

The correct answer is d. Some amino acids are produced from more than one codon.

The genetic code is degenerate, meaning that multiple codons can code for the same amino acid. This redundancy in the genetic code allows for some flexibility and tolerance to mutations.

Therefore, a base substitution mutation in a gene may not always result in a different protein if the mutated codon still codes for the same amino acid.

In such cases, even though the DNA sequence has changed, the resulting protein sequence remains unchanged.

Options a, b, and c are not accurate explanations for why a base substitution mutation may not result in a different protein.

Option a suggests that the mutation only affects the sequence of amino acids, but this is not a comprehensive explanation as changes in the DNA sequence can affect protein structure and function.

Option b refers to the rarity of such mutations, which is not a determining factor in whether a mutation results in a different protein or not.

Option c suggests that complementary deletions accompany the mutation, which is not generally the case and does not explain why the protein remains the same.

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Answer:

theres no expirement attached, attach an expirement and i can answer

Explanation:

Not, the given statement is false as because the lizard is cold-blooded animal, which as a result of their inability to produce internal heat, lizards are poikilotherms.

Poikilotherms- Poikilotherms possess the physiological capacity to produce heat, hence in the absence of the any behavioral modifications, their body temperatures tend to match those of their surroundings. Animals that have "cold blood" are an example of poikilotherms. Animals that are poikilothermic include numerous invertebrate species as well as several vertebrate species, including certain fish, amphibians, and reptiles.

Species- A collection of creatures that can breed with each other in nature and have healthy offspring is referred to as a biological species.

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A DNA strand has three different reading frames because DNA is translated into groups of three nucleotides (codons). There are six possible frame translations since the DNA molecule's double helix contains two anti-parallel strands with three reading frames each.

It displays six horizontal bars for each potential reading frame. Three alternative reading frames would exist for each orientation of the DNA. There would therefore be a total of 6 reading frames (6 horizontal bars) for every DNA sequence.

Given that the genetic code is double-stranded and that DNA is There are six different reading frames that can be based on triplets (3 consecutive bases). By breaking up the nucleotide sequence of DNA or RNA into a series of sequential, non-overlapping triplets, one can identify a reading frame.

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Answer:

The answer is c a gamete has two of the same alleles after meiosis 2

Explanation:

The study compares the use of intraoperative Mitomycin with postoperative 5-Fluorouracil in high-risk glaucoma filtering surgery.

This study aims to investigate the efficacy and safety of two different approaches for glaucoma filtering surgery in high-risk patients. The two approaches being compared are the use of Mitomycin during the surgery itself and the application of 5-Fluorouracil after the surgery. Glaucoma filtering surgery is a procedure performed to lower intraocular pressure in patients with glaucoma. High-risk patients are those who are at increased risk of surgical failure or complications. By comparing the outcomes of using Mitomycin intraoperatively and 5-Fluorouracil postoperatively, the study seeks to provide insights into the optimal treatment strategy for high-risk glaucoma patients undergoing filtering surgery.

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Answer:

From top to bottom the answers are: T,C,A,G

Explanation:

Due to the rule, A is always paired with T and vise versa, and G is always paired with C and vise versa

The base pair sequence that best corresponds with the nucleotides provided as AGTC is TCAG.

DNA is a biological molecule that stores genetic information in living cells.

DNA is a double stranded molecule that is made up of monomers called nucleotides. The four nucleotides that make up the DNA are as follows:

According to this question, the following DNA sequence is given: AGTC, therefore, the sequence of the complementary strand is as follows: TCAG.

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The energy present in the ecosystem is being conveyed from producers to each level of the ecosystem. Photosynthesis is the process involve in the conversion of the energy from the sun to chemical energy. The number of trophic levels in an ecosystem is confines to 4-5 only. Only 10 % of energy is being conveyed from one level to the next. If this will be the case, each level will have a decrease of energy. If a sixth level will be present, there will be not enough energy to provide the species on such level.

Answer is Option 1 - Not enough energy is available to be transferred from the fifth trophic level to the sixth trophic level to support organisms.

The term that describes a single female arctic fox is a vixen.

A vixen is a female fox, including the arctic fox, that is not pregnant or nursing young. It belongs to the Canidae family and is found in the tundra and other Arctic regions of the Northern Hemisphere.The Arctic fox is a small, compact, and sturdy mammal that can survive in some of the world's harshest environments.

The population of Arctic foxes that lives along the eastern coast of Russia is not referred to as a group of polar bears. It is known as a population, a community, or a family.A population is a group of animals of the same species that live in the same area and interact with one another.

A family of arctic foxes is made up of a male and female adult and their offspring. They live together in underground dens that are used for shelter and protection.Arctic foxes are considered a keystone species in the Arctic region because they play a crucial role in the ecosystem. They feed on small animals like lemmings and voles, which helps to regulate their populations. In addition, they are a food source for larger predators like wolves and polar bears, which helps to maintain balance in the food web.

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The molecules that conserve most of the energy from the redox reactions of the citric acid cycle are NADH and FADH2. This energy is converted into a form that can be used to make ATP through oxidative phosphorylation.

During the citric acid cycle, also known as the Krebs cycle or tricarboxylic acid cycle, a series of redox reactions occur that result in the production of energy-rich molecules. Two of the main molecules that carry and conserve most of the energy in this process are NADH (nicotinamide adenine dinucleotide) and FADH2 (flavin adenine dinucleotide).

NADH and FADH2 are formed when NAD+ and FAD, respectively, accept electrons and hydrogen ions (H+) from the citric acid cycle intermediates. These molecules serve as electron carriers, storing the energy from the redox reactions.

The next step in the energy conversion process involves oxidative phosphorylation, which takes place in the inner mitochondrial membrane. Here, the high-energy electrons carried by NADH and FADH2 are transferred to the electron transport chain (ETC), a series of protein complexes embedded in the membrane. As the electrons pass through the ETC, their energy is gradually released, and this energy is used to pump protons (H+) across the membrane, creating an electrochemical gradient.

The final step in ATP synthesis is the flow of protons back into the mitochondrial matrix through an enzyme called ATP synthase. This flow of protons drives the synthesis of ATP from adenosine diphosphate (ADP) and inorganic phosphate (Pi) in a process called chemiosmosis. In this way, the energy conserved in NADH and FADH2 from the citric acid cycle is converted into ATP, which is the primary energy currency of cells.

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so 1st of all this is not a biology subject

but anyways

A Uniform Resource Locator, more commonly known as a URL, is the global address of documents and other resources on the World Wide Web. It is the mechanism used by browsers to retrieve any published resource on the web.

^ is the answer

Answer:

digestive and circulatory

Answer:

transfer RNA( tRNA)

Explanation:

Molecules carry amino acids to the ribosomes during proteins:)

Answer:

transfer RNA (tRNA)

Explanation:

Messenger RNA (mRNA) molecules carry the coding sequences for protein synthesis and are called transcripts; ribosomal RNA (rRNA) molecules form the core of a cell's ribosomes (the structures in which protein synthesis takes place); and transfer RNA (tRNA) molecules carry amino acids to the ribosomes during protein ...

During the process of gravitational condensation, solid particles are formed from solar nebula materials. Making option D the right answer to the question.

A solar nebula is made up of gas and dust, and it is where the Sun and the planets are formed by a process called condensation. For billions of years ago, several research conducted by some scientists shed more light on this phenomenon. Condensation makes it possible for solid particles to be formed from solar nebula materials.

In summary, during the process of gravitational condensation, objects don't decrease in size due to the collision of materials, objects don't increase in size due to the addition of materials, and particles are not formed from solar nebula materials. Only solid particles are formed from solar nebula materials

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Because of how Earth orbits the sun, the appearance of the stars in the sky varies throughout different seasons.

The bright appearance of multiple stars in the night sky fluctuates throughout the year due to how the earth circles the sun. Since planet revolves around sun, varied stars may be seen at different times and durations in a year, which changes how night sky appears to a human. For instance: The constellation Cygnus may be viewed in northern hemisphere both high in the summer sky and closer to the horizon during winters.

This is because the apparent location of the stars in the sky changes as a result of the tilt of the Earth. Further, which stars are visible might vary depending on where the sun is in the sky. Because sun sets longer during the summer, certain stars might not be seen until later in the evening. Whereas, as sun sets sooner during winters, more stars are visible earlier in the evening.

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The reason you observe different patterns of stars in space during different seasons is because Earth circles, or orbits, around the sun. This means, at different times of the year, Earth will be in a different position around the sun and, therefore, facing different stars. The patterns of stars you see at night depends on where Earth is positioned around the sun. Scientists know that Earth orbits the sun because we can view different star patterns during different seasons. Let's say you observe a pattern of stars shining bright in a specific location during a warm summer night. If you were to go back to that location on a cold winter night, you would not see that same pattern of stars. This is because, as Earth orbits around the sun, it faces different patterns of stars.

Stars are the most widely recognized astronomical objects, and represent the most fundamental building blocks of galaxies. The age, distribution, and composition of the stars in a galaxy trace the history, dynamics, and evolution of that galaxy. Moreover, stars are responsible for the manufacture and distribution of heavy elements such as carbon, nitrogen, and oxygen, and their characteristics are intimately tied to the characteristics of the planetary systems that may coalesce about them. Consequently, the study of the birth, life, and death of stars is central to the field of astronomy.

Answer:

B

Explanation:

Kinda already explained, but when the molten lava solidifys it turns into igneous rock.

It isn't sedimentary because those are formed by depositions

It isn't metamorphic because those are formed by heat and pressure. (I can see how this could be confusing) but metamorphic rocks really just means that it's changing it's form. before the pressure and heat, it could of already been a sedimentary rock and changed.

it isn't conglomerate rock because those are just pebbles cemented together plus it's a type of sedimentary rock.

In mussels the allele for brown coloring is dominant and the allele for blue coloring is recessive. bb x bb parental genotype is 100% of the offspring expected to be blue.

The type of variation present at a certain locus (i.e., region) in the genome is scored by what is known as a genotype. Symbols can be used to symbolize it. For instance, BB, Bb, and bb might be used to denote a certain gene variation. The actual DNA sequence, such as CC, CT, or TT, can also serve as a representation of a genotype. In a single experiment, the genotypes at millions of sites in a genome may be determined using DNA sequencing and other techniques. Some genetics influence an individual's phenotype, or observable qualities.

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Answer:

I hope this helps.

Explanation:

Answer:

gas, liquid, solid

Explanation:

I could also list 12 other states of matter if you're interested

Answer: Solids, liquids and gases are the most familiar states of matter.

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