BIOLOGY:THE ESSENTIALS (LL) W/CONNECT
3rd Edition
ISBN: 9781260670929
Author: Hoefnagels
Publisher: MCG CUSTOM
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Chapter 12, Problem 7WIO
Explain how harmful recessive alleles can persist in population, even though they prevent homozygous individuals from reproducing.
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Chapter 12 Solutions
BIOLOGY:THE ESSENTIALS (LL) W/CONNECT
Ch. 12.1 - What are two ways to define evolution?Ch. 12.1 - Prob. 2MCCh. 12.2 - Prob. 1MCCh. 12.2 - What did Darwin observe that led him to develop...Ch. 12.2 - What is modern evolutionary synthesis?Ch. 12.3 - Prob. 1MCCh. 12.3 - Prob. 2MCCh. 12.3 - Prob. 3MCCh. 12.3 - Prob. 4MCCh. 12.4 - Prob. 1MC
Ch. 12.4 - Why doesnt Hardy-Weinberg equilibrium occur in...Ch. 12.5 - Distinguish among directional, disruptive, and...Ch. 12.5 - How can natural selection maintain harmful alleles...Ch. 12.6 - Prob. 1MCCh. 12.6 - Prob. 2MCCh. 12.7 - How do mutations affect an organisms phenotype?Ch. 12.7 - South china tigers once had two color patterns...Ch. 12.7 - Prob. 3MCCh. 12.7 - Prob. 4MCCh. 12 - Microevolution applies to changes that occur a....Ch. 12 - Biological evolution describes how ____ change...Ch. 12 - Prob. 3MCQCh. 12 - What is the most accurate way to explain the...Ch. 12 - Suppose that after an environmental change, foxes...Ch. 12 - Huntington disease is caused by a rare, lethal,...Ch. 12 - A population of 100 sea stars is in Hardy-Weinberg...Ch. 12 - Prob. 8MCQCh. 12 - Darwin observed that different types of organisms...Ch. 12 - Which of the following processes is nonrandom? a....Ch. 12 - Prob. 1WIOCh. 12 - Prob. 2WIOCh. 12 - Explain how understanding evolution is important...Ch. 12 - Write a paragraph that describes the connections...Ch. 12 - Jellyfish Lake, located on the Pacific island of...Ch. 12 - Prob. 6WIOCh. 12 - Explain how harmful recessive alleles can persist...Ch. 12 - Prob. 8WIOCh. 12 - Describe the competing selective forces acting on...Ch. 12 - Some researchers suggest that a giraffes long neck...Ch. 12 - Burning Question 12.1 explains why an organism...Ch. 12 - Review the Survey the Landscape figure in the...Ch. 12 - Describe situations in which the five mechanisms...Ch. 12 - Prob. 3PIT
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- Explain how mutation, genetic drift, and gene flow can all contribute to changes in allele frequencies.arrow_forwardWhy do recessive lethals persist in a population? Provide an example of a recessive lethal allele.arrow_forwardState and explain the factors that produce genetic variation among populations.arrow_forward
- The frequency of a recessive allele in a population is 50%. What is the frequency of the dominant allele?arrow_forwardA scientist is studying a wild population of Japanese morning glories. It is easy to separate genotypes at a flower color locus by their phenotypes. Red individuals are homozygous for the R allele, yellow individuals are homozygous for the Y allele, and orange individuals are heterozygous. If the number of individuals with the following genotypes are: RR: 831 RY: 33 YY: 442 Is the population in Hardy Weinberg Equilibrium?arrow_forwardA population of rabbits may be brown (the dominant phenotype) or white (the recessive phenotype). Brown rabbits have the genotype BB or Bb. White rabbits have the genotype bb. The frequency of the BB genotypre is .35 What is the frequency of the heterozygous rabbits? What is the frequency of the B allele? What is the frequency of the b allele?arrow_forward
- Suppose in a certain population there are 100 individuals homozygous for the A1 allele, 400 individuals homozygous for the A2 allele, and 500 heterozygous individuals. What are the genotype frequencies? What are the allele frequencies?arrow_forwardIn a population that is in HW equilibrium, 38% of individuals are recessive homozygotes for a certain trait. In a population of 14,500, calculate the percentage of homozygous dominant individuals and heterozygote individuals.arrow_forwardA particular recessive genotype shows a frequency of 16 % in a given population . Answer the following questions : 1 - What is the probability of a dominant allele in the population ? 2 - What is the frequency of a heterozygous dominant in this population . 3 - What is the probability of the dominant allele in the next generation if the population is at equilibrium ?arrow_forward
- In a population of 1000 people, 600 are homozygous dominant, 150 are heterozygous and 250 homozygous recessive. what is the frequency of the dominant allele? a67.5 b77.5 c87.5arrow_forwardList the mechanisms that may cause allele and genotype frequencies to significantly change from one generation to the next.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_forward
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