What is the gene pool? A part of a chromosome that encodes an RNA or protein product in its DNA sequence All of the alleles of all the genes in a population The abundance of a particular allele among members of a population Forms of a gene with slightly different DNA sequences that may encode slightly different versions of the gene's product

What is the gene pool? A part of a chromosome that encodes an RNA or protein product in its DNA sequence All of the alleles of all the genes in a population The abundance of a particular allele among members of a population Forms of a gene with slightly different DNA sequences that may encode slightly different versions of the gene's product

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter21: Microevolution: Genetic Changes Within Populations

Section: Chapter Questions

Problem 1TYK: The reason spontaneous mutations do not have an immediate effect on allele frequencies in a large...

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Over the last several decades, the scientific community has gathered a large amount of information regarding genetics and genetic variation. What is a main source that leads to increased genetic variation? Top of Form Selective breeding Chromosomal mutations Recombination Genetic drift
Which one of the following statements best describes the difference between mutation and substitution in a population? Mutation is the origin of a new allele in an individual organism, and substitution is the evolutionary replacement of one allele by another. Mutation is the origin of a deleterious allele, and substitution is the increase in frequency of an advantageous allele by positive selection. Mutation is change in the DNA sequence within a functional gene, and substitution involves nucleotide changes in noncoding regions of the genome.
What would happen if a mutation created a new allele that decreased fitness? * The new allele would have to change back to an allele of higher fitness so the possessor of that allele could maintain its fitness. The individual with the new allele would wait for an environmental change so that its fitness would increase again No answer The new allele would decrease the fitness of the individual that possessed it, and that individual would have few or no offspring The new allele would spread through the population and decrease the fitness of that population
The reason spontaneous mutations do not have an immediate effect on allele frequencies in a large population is that: a. mutations are random events, and mutations may be eitherbeneficial or harmful. b. mutations usually occur in males and have little effect oneggs. c. many mutations exert their effects after an organism hasstopped reproducing. d. mutations are so rare that mutated alleles are greatlyoutnumbered by nonmutated alleles. e. most mutations do not change the amino acid sequence of aprotein.
Hereditary genetics Population genetics Molecular genetics Answer Bank expressing exogenous transgenes to understand function calculating genotype frequencies to understand phenotype changes in a population researching how genetic drift impacted many species over the past thousand years observing phenotypes in offspring to understand gene inheritance studying DNA-protein interactions to understand gene regulation tracing pedigrees to determine patterns of gene transmission within a family
Which of the following is the clearest example of an interaction between genes and environment? Group of answer choices Alice has green eyes, whereas her brother has brown eyes Children with two alleles for phenylketonuria develop the disease but children with only one allele do not have even a weak form of the disease People born with genes for gluten intolerance get very sick when they eat gluten A child with two average-height parents grows up to be quite a bit taller than average
In a certain population of mice, a single gene controls fur color. There are two possible alleles: B, which leads to a black fur, and W, which leads to white fur. Individuals with the genotype BB will have a black fur, individuals with the genotype WW will have white fur, and individuals with the genotype BW will have gray fur. Scientists recorded the fur color of 1,000 mice from the population. They found that 200 mice have black fur, 400 have gray fur, and 400 have white fur. Ten years later, the measurements are repeated. Again, they recorded the fur color of 1,000 mice. They found that 400 have black fur, 400 have gray fur, and 200 have white fur. Part A: Show the Hardy-Weinberg calculations for the beginning and ending populations. Include the values for the equation as well as the p andq values. Show your work. Part B: Use the Hardy-Weinberg calculation to explain if this population is evolving or not. Then propose a hypothesis about the environment of these mice that would lead…
In a certain population of mice, a single gene controls fur color. There are two possible alleles: B, which leads to a black fur, and W, which leads to white fur. Individuals with the genotype BB will have a black fur, individuals with the genotype WW will have white fur, and individuals with the genotype BW will have gray fur. Scientists recorded the fur color of 1,000 mice from the population. They found that 200 mice have black fur, 400 have gray fur, and 400 have white fur. Ten years later, the measurements are repeated. Again, they recorded the fur color of 1,000 mice. They found that 400 have black fur, 400 have gray fur, and 200 have white fur. Part A: Show the Hardy-Weinberg calculations for the beginning and ending populations. Include the values for the equation as well as the p and q values. Show your work. Part B: Use the Hardy-Weinberg calculation to explain if this population is evolving or not. Then propose a hypothesis about the environment of these mice that would lead…
1. (a) Analysis of genome-wide patterns of gene expression Functional Genomics Genome Technology Transcriptomics Metabolomics (b) The proportion of any specific allele in a population allele frequency genotype frequency gene pool relative fitness
You are studying an autosome trait. There are two alleles, one showing complete dominance over the other. In a population, 84% of the individuals show the dominant phenotype. Assuming that this population is under Hardy-Weinberg equilibrium, which of the following statement is TRUE? 36% of individuals have the homozygous dominant genotype. 40% of the alleles in the population is recessive. 16% of the alleles in the population is recessive. 60% of individuals have the dominant alleles.
What is the probability of fixation of a gene in a population of 30 individuals (assume no selection for or against a mutation)? Multiple Choice 3.3% 3% 1.6% 0.16%
To what does the term "genotype" refer? Group of answer choices how an organism looks the DNA sequence the heterozygous state what's going on in the environment