WHAT IS LIFE? A GUIDE TO BIO 3E+LAUNCHPA
3rd Edition
ISBN: 9781319103316
Author: PHELAN
Publisher: Macmillan Higher Education
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Chapter 8, Problem 11SA
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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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 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?
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Chapter 8 Solutions
WHAT IS LIFE? A GUIDE TO BIO 3E+LAUNCHPA
Ch. 8 - Prob. 1SACh. 8 - Prob. 2SACh. 8 - Prob. 3SACh. 8 - Prob. 4SACh. 8 - Prob. 5SACh. 8 - Prob. 6SACh. 8 - Prob. 7SACh. 8 - Prob. 8SACh. 8 - Prob. 9SACh. 8 - Prob. 10SA
Ch. 8 - Prob. 11SACh. 8 - Prob. 12SACh. 8 - Prob. 13SACh. 8 - Prob. 14SACh. 8 - Prob. 15SACh. 8 - Prob. 16SACh. 8 - Prob. 17SACh. 8 - Prob. 18SACh. 8 - Prob. 19SACh. 8 - Prob. 20SACh. 8 - Prob. 21SACh. 8 - Prob. 1MCCh. 8 - Prob. 2MCCh. 8 - Prob. 3MCCh. 8 - Prob. 4MCCh. 8 - Prob. 5MCCh. 8 - Prob. 6MCCh. 8 - Prob. 7MCCh. 8 - Prob. 8MCCh. 8 - Prob. 9MCCh. 8 - Prob. 10MCCh. 8 - Prob. 11MCCh. 8 - Prob. 12MCCh. 8 - Prob. 13MCCh. 8 - Prob. 15MCCh. 8 - Prob. 16MC
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- 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?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 is the ultimate cause of variation in 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_forwardWhat Causes Allele Frequencies to Change in Real Populations?arrow_forwardHow can natural selection maintain harmful alleles in a population?arrow_forward
- There 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_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 is genetic variability necessary in a population? What can happen if genetic variability is reduced?arrow_forward
- Why do recessive lethals persist in a population? Provide an example of a recessive lethal allele.arrow_forwardWhy is genetic variation important to populations?arrow_forwardWHAT CAN YOU SAY ABOUT THE FREQUENCY OF APPEARING THE HOMOZYGOUS DOMINANT, HETEROZYGOUS DOMINANT AND RECESSIVE TRAIT IN A POPULATION?arrow_forward
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