Human Heredity: Principles and Issues (MindTap Course List)
11th Edition
ISBN: 9781305251052
Author: Michael Cummings
Publisher: Cengage Learning
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Chapter 19, Problem 17QP
Summary Introduction
Introduction: The Hardy-Weinberg law states that in the absence of other evolutionary influences the frequency of allele and genotypes or
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Microevolution is described by which of the following?
Select one:
A.
Changes in anatomical structures found in an individual when compared to ancestral forms of the species
B.
Changes in anatomical structures found in a population when compared to ancestral forms of the species
C.
Changes in the frequency of alleles in a population
D.
Changes in the frequency of alleles in an individual
A farmer bought a herd of 500 sheep, taken from a freely breeding population, and later found that 25 of the animals had an economically undesirable feature, crinkly-hair, caused by the recessive allele (c). Assume Hardy-Weinberg Equilibrium (Show your work.)
What proportion of the herd is likely to be heterozygous?
Please show all work.
What is true of populations that are in Hardy-Weinberg equilibrium?
a. Organisms are constantly migrating.
b. Mating is random.
c. The populations must be very small.
d. Natural selection is occurring.
Chapter 19 Solutions
Human Heredity: Principles and Issues (MindTap Course List)
Ch. 19.8 - Why dont genetic markers on the Y chromosome...Ch. 19.8 - Prob. 2GRCh. 19 - If you suspected that heterozygous carriers of a...Ch. 19 - If allele frequencies in the hemoglobin gene are...Ch. 19 - Prob. 1QPCh. 19 - How Can We Measure Allele Frequencies in...Ch. 19 - How Can We Measure Allele Frequencies in...Ch. 19 - Prob. 4QPCh. 19 - Prob. 5QPCh. 19 - How Can We Measure Allele Frequencies in...
Ch. 19 - How Can We Measure Allele Frequencies in...Ch. 19 - How Can We Measure Allele Frequencies in...Ch. 19 - Using the HardyWeinberg Law in Human Genetics...Ch. 19 - Prob. 10QPCh. 19 - Using the HardyWeinberg Law in Human Genetics In a...Ch. 19 - Prob. 12QPCh. 19 - Measuring Genetic Diversity in Human Populations...Ch. 19 - Measuring Genetic Diversity in Human Populations...Ch. 19 - Prob. 15QPCh. 19 - Measuring Genetic Diversity in Human Populations...Ch. 19 - Prob. 17QPCh. 19 - Prob. 18QPCh. 19 - Measuring Genetic Diversity in Human Populations...Ch. 19 - Natural Selection Affects the Frequency of Genetic...Ch. 19 - Prob. 21QPCh. 19 - Prob. 22QPCh. 19 - The Evolutionary History and Spread of Our Species...Ch. 19 - Prob. 24QPCh. 19 - Genomics and Human Evolution The Denisovan genome...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- A) Distinguish genetic drift from gene flow in terms ofhow they each occur and their implications for futuregenetic variation in a population.B) Explain the importance of the bottle neck effect inconservation biology of endangered species.arrow_forwardQuestion: Human hunting of bighorn sheep has focused on ‘trophy’ sheep which are the largest male sheep with the longest horns. Consequently, over the last 30 years of hunting pressure, average weight of male sheep has declined by ~20 kilograms and average horn length has declined by ~25 centimeters. These changes are evidence of _________ selection. A- Stabilizing B- Diversifying/Disruptive C- Directional D- There is no evidence of selection in this systemarrow_forward"Populations can adapt via genetic drift." Please explain in detail why this is false and a misconception.arrow_forward
- Explain the five conditions that need to be met for a population to be at genetic equilibrium according to Hardy and Weinberg (The Hardy-Weinberg principle). Additionally, explain what conditions would have to have been met if the population evolved. Be detailed in your answer(s).arrow_forwarda. What effect does combining genetic drift and natural selection have on beneficial mutations? b. How would you it change if population size increasesarrow_forwardA farmer bought a herd of 500 sheep, taken from a freely breeding population, and later found that 25 of the animals had an economically undesirable feature, crinkly-hair, caused by the recessive allele (c). Assume Hardy-Weinberg Equilibrium. a) What is the frequency of this undesirable allele in the herd? Please show all work.arrow_forward
- The Hardy-Weinberg theory can be applied only to a population Select one: a. in which migration occures b. Where mutations occur c. that is large in size d. Where mating is nonrandomarrow_forwardUnder genetic drift, if an allele’s frequency is 1%, what is the likelihood that it will be lost from the population? part B; Construct a graph that describes the likelihood of fixation of a particular allele, for a small population that is under Wright-Fisher genetic drift. Don’t forget to label axes completely.arrow_forwardAccording to the Hardy-Weinberg law of equilibrium: Question 1 options: A) In absence of mutation and natural selection, the frequencies of the genotypes will remain stable because no evolutionary change takes place. B) In absence of gene flow, the frequencies of the genotypes will remain stable because no evolutionary change takes place. C) In absence of genetic drift, the frequencies of the genotypes will remain stable because no evolutionary change takes place. D) All of the above. E) None of the above.arrow_forward
- 60)The figure below shows the average horn size of male big horn sheep in Alberta over a period of 35 years. This population is subject to a legal trophy hunt. Given the available information, what would be the most reasonable evolutionary hypothesis explaining the observed trend? Trophy hunting caused stabilizing selection. Trophy hunting caused disruptive selection. Trophy hunting caused frequency dependent selection. Trophy hunting caused directional selection.arrow_forwardConsidering the Hardy-Weinberg theorem’s assumptions, which of the following statements is NOT correct? (Recall that there are certain assumptions that must be true in order for the Hardy-Weinberg theorem to accurately predict genotype ratios in the next generation.)a) The population must be very large so there random genetic drift will not occur.b) No natural selection can occur.c) Mating must be random.d) Individuals must migrate into and out of the population so that gene flow will occur.e) Mutations must not occur.arrow_forwardIn mice, black fur (W) is dominant over white fur (w). In an ideal mouse population exhibiting Hardy–Weinberg equilibrium, 167 mice out of 225 have white fur. Calculate the number of mice that are heterozygous dominant for the fur colour gene in the population. Show all work. Express your answer rounded to the nearest whole number:arrow_forward
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