Identifying genes like HMGA2 is important, because it is evidence of natural selection. How does it demonstrate that natural selection occurred in Darwin’s finches?   Scientists mutate and modify the gene in the lab to see how changes might occur to the organism. Scientists identify different forms of the gene in individuals from the same species and observe how it shows up as a trait. Scientists study similar genes that also impact the same traits to see how they work together and influence one another. Scientists observe the frequency of the different forms of the gene and how it changes in response to the environment.

Q: Steven Frank and Laurence Hurst argued that a cytoplasmically inherited mutation in humans that has…

A: The mutation is the sudden deleterious effects in the DNA sequences, they can arise when the DNA is…

Q: We will examine some human phenotypes that are controlled by a single gene.  For each…

A: Alleles are already form of a gene. Each trait or character is determined by combination of two…

Q: What are the genotypes of the individuals involved in this cross?

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Q: which of the three genotypes will increase in frequency? What if medical science were able to hold…

A: Natural selection is a phenomenon in which the traits are selected which are are favourable for…

Q: Drag the item from the item bank to its corresponding match. The physical expression of genes. This…

A: DNA is the genetic material present in the nucleus of the cell. The DNA is present in the…

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A: As per the honor code, we answer only three subparts at a time. Therefore, we are answering the…

Q: Jean-Baptiste Lamarck (1744-1829), a French scientist who believed in evolution, is known for…

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A: Natural selection is the process by which individuals reproduce and survive differently based on…

Q: 1. Definitions of phenotype, genotype, allele, gene, microevolution, macroevolution

A: We’ll answer the first question since the exact one wasn’t specified. Please re-submit a new…

Q: Describe why fitness has a molecular basis. How does DNA play a role in an organism's fitness? Is…

A: DNA(deoxyribonucleic acid) is defined as the biological molecule that carries all the genetic…

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Q: Which of the following statements accurately describes genetic mutations? *       Mutations are a…

A: Mutation - A alteration in the DNA sequence of an organism is referred to as a mutation. Errors in…

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A: The correct answer is: variation, fitness consequences, and mode of inheritance.Variation: This is…

Q: Which of the following is the clearest example of an interaction between genes and environment?…

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A: It's depends on how fast new mutation occur

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A: Evolution is change in the heritable characteristics

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Q: Which of the following statements about mutation is correct?     -Changing one nucleotide is a…

A: Changing one nucleotide is mutation, but duplication  of entire gene is not. Is correct

Q: 21) Morgan's fruit fly work showed that genes are made of DNA  True  False 22) Some genes can…

A: Question : True or False 21) Morgan's fruit fly work showed that genes are made of DNA  True  False…

Q: If this model continues, with no major changes to the environment, what do you expect to happen? A)…

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Q: In your own words, explain the difference between ancestral and derived traits.

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Q: How and why have humans changed animals over time through artificial selection?

A: Q. How and why have humans changed animals over time through artificial selection?   Answer -…

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A: The term "genetic variation" refers to the variation in the genetic composition of individuals…

Ecological adaptations

An ecological adaptation is any morphological, physiological, or behavioral trait of an organism that allows it to survive and reproduce in a habitat or ecosystem. Adaptation is a biological mechanism by which an organism gradually gets more acclimated to its surroundings.