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4th Edition
ISBN: 9781319154639
Author: Jay Phelan
Publisher: W.H. Freeman & Co
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Question
Chapter 10, Problem 6SA
Summary Introduction
To analyze:
Whether recessive alleles tend to decrease in a population.
Introduction:
An allele that gives the organism a disadvantage at reproducing, will not be passed on to the future generations.
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Students have asked these similar questions
The frequency of a recessive allele in a population is 50%. What is the frequency of the dominant allele?
In a population the homozygous dominant individuals (AA) made up 49% of the population, while heterozygous ones (Aa) made up 42%, and recessive (aa) made up 9%. What are the frequencies of the A and a alleles?
Does inbreeding affect allele frequencies? Why or why not? How does it affect genotype frequencies? With regard to rare recessive diseases, what are the consequences of inbreeding in human populations?
Chapter 10 Solutions
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- In a population the homozygous dominant individuals made up 70% of the population, while heterozygous ones made up 21%, and recessive made up 9%. What are the frequencies of the A and a alleles?arrow_forwardThere are 100 dominant homozygotes, 100 heterozygotes, and 100 recessive homozygotes in a population. How many dominant alleles and how many recessive alleles are in this population? What would be their respective allele frequencies?arrow_forwardThere are 150 dominant homozygotes, 100 heterozygotes, and 50 recessive homozygotes in a population. How many dominant and how many recessive alleles are in this population? What would be there respective allele frequencies?arrow_forward
- What is the ultimate cause of variation in populations?arrow_forwardIf 90 out of 200 individuals in a population express the recessive phenotype, what is the frequency of the recessive allele?If 90 out of 200 individuals in a population express the recessive phenotype, what proportion of the population are expected to be heterozygotes?arrow_forwardWhat Causes Allele Frequencies to Change in Real Populations?arrow_forward
- Is it easier for selection to remove a deleterious recessive allele from a randomly mating population or from a highly inbred population? Why?arrow_forwardFor EACH of the observed traits, which is most frequent in our class population, the dominant phenotype or the recessive phenotype? Why?arrow_forwardThere are 60 dominant homozygotes, 100 heterozygotes, and 25 recessive homozygotes in a population. How many dominant alleles are in the population? How many recessive alleles are in the population? For these alleles, what would be the allele frequencies of both?arrow_forward
- How can natural selection maintain harmful alleles in a population?arrow_forwardIn a population, the dominant phenotype of a certain trait occurs 91% of the time. What is the frequency of the dominant allele?arrow_forwardWhy do recessive lethals persist in a population? Provide an example of a recessive lethal allele.arrow_forward
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