Genetic drift in a population affects the gene pool in which of the following ways?decrease in genetic variationincrease in genetic variationincreased in mutationsdecreased in gene flow A high population of greater prairie chickens once inhabited the prairies of Illinois. The conversion of the prairies intoagricultural land caused the chickens to lose their habitat. Studies have concluded that this change greatly reduced thegreater prairie chicken population. The habitat loss also resulted in a decrease in the population's genetic variation.Which change in the gene pool occurred in the greater prairie chicken population?gene mutationgene flowgenetic driftgenetic resistance

Genetic drift is an evolutionary changes in allelic frequencies of a population as a matter of…

Answered: Genetic drift in a population affects…

Genetic drift in a population affects the gene pool in which of the following ways? decrease in genetic variation increase in genetic variation increased in mutations decreased in gene flow

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter12: Processes Of Evolution

Section: Chapter Questions

Problem 9SQ

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Concept explainers

Genetic Variation

Genetic variation refers to the variation in the genome sequences between individual organisms of a species. Individual differences or population differences can both be referred to as genetic variations. It is primarily caused by mutation, but other factors such as genetic drift and sexual reproduction also play a major role.

Quantitative Genetics

Quantitative genetics is the part of genetics that deals with the continuous trait, where the expression of various genes influences the phenotypes. Thus genes are expressed together to produce a trait with continuous variability. This is unlike the classical traits or qualitative traits, where each trait is controlled by the expression of a single or very few genes to produce a discontinuous variation.

Question

Genetic drift in a population affects the gene pool in which of the following ways?
decrease in genetic variation
increase in genetic variation
increased in mutations
decreased in gene flow

A high population of greater prairie chickens once inhabited the prairies of Illinois. The conversion of the prairies into
agricultural land caused the chickens to lose their habitat. Studies have concluded that this change greatly reduced the
greater prairie chicken population. The habitat loss also resulted in a decrease in the population's genetic variation.
Which change in the gene pool occurred in the greater prairie chicken population?
gene mutation
gene flow
genetic drift
genetic resistance

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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
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.
In the study of genetics, a model organism is one in which hypotheses can be tested and the results are usually true of most other organisms. For examining heredity and how different alleles affect traits in a population, a good model organism is one that has a short generation time and many offspring O is most like a wild population has only a few offspring that can be studied extensively most resembles humans
A trait with only two forms in the population, wild type and mutant, would exhibit which one of the following types of genetic variation in the population? Continuous Discontinuous Both continuous and discontinuous Neither continuous nor discontinuous
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
Understand the importance of genetic variation toevolutionary change.
Which of the following best defines gene flow? the sum of all genetic traits in a population's individuals at a given time any movement of genes from one population to another any movement of organisms from one environment to another the random change in the frequency of an allele in a population
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A handful of genetically identical tomato plants are grown in a garden. The mean height in this plant population is 84 cm, and the standard deviation is 2 cm. The variation in height within this population is most likely due to: the microenvironment of each plant O the use of a non-representative sample to compute the mean O random mutations within the population. O the difference between these plants and other tomato plants
Which of the following statements about genetic drift is correct? Genetic drift causes predictable fluctuations in allele frequencies from one generation to the next and do not affect genetic variation within populations. Genetic drift causes unpredictable fluctuations in allele frequencies from one generation to the next and does not affect genetic variation within populations. Genetic drift causes predictable fluctuations in allele frequencies from one generation to the next and increases genetic variation within populations. Genetic drift causes unpredictable fluctuations in allele frequencies from one generation to the next and tend to reduce genetic variation within populations. Genetic drift causes predictable fluctuations in allele frequencies from one generation to the next and reduces genetic variation within populations.
Which of the following statements about genetic drift is correct? Genetic drift causes predictable fluctuations in allele frequencies from one generation to the next and increases genetic variation within populations. Genetic drift causes predictable fluctuations in allele frequencies from one generation to the next and reduces genetic variation within populations. Genetic drift causes unpredictable fluctuations in allele frequencies from one generation to the next and does not affect genetic variation within populations. Genetic drift causes predictable fluctuations in allele frequencies from one generation to the next and do not affect genetic variation within populations. ) Genetic drift causes unpredictable fluctuations in allele frequencies from one generation to the next and tend to reduce genetic variation within populations.
A population consists of 100 individuals of the following genotypes: AA 55 Aa 20 0.14 0.2 0.25 0.35 0.55 0.65 0.75 0.8 aa 25 What is the frequency of the A allele?