Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 12, Problem 19TYK
Summary Introduction
To review:
The way in which epistatic interaction shelters the harmful allele from the action of natural selection.
Introduction:
When two genes are responsible for the same
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Explain how Darwinian evolution can decrease and increase the frequency of an allele (or a more complex heritable trait, for that matter).
Provide 3 reasons why natural selection allows only the better alleles to be passed onto the next generation. Please explain in details.
Describe an ancient hypothesis that explains how traits are passed from parents to offspring. What is the modern concept that contradicts this hypothesis?
Chapter 12 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 12.1 - Two pairs of traits are segregating in a cross....Ch. 12.1 - If, instead, the four phenotypes in question 1...Ch. 12.2 - Palomino horses have a golden coat color, with a...Ch. 12.2 - A true-breeding rabbit with agouti (mottled,...Ch. 12 - The dominant C allele of a gene that controls...Ch. 12 - In peas, the allele Le produces tall plants and...Ch. 12 - Prob. 3TYKCh. 12 - What genotypes, and in what frequencies, will be...Ch. 12 - In addition to the two genes in problem 4, assume...Ch. 12 - Prob. 6TYK
Ch. 12 - In cats, the genotype AA produces tabby fur color;...Ch. 12 - Prob. 8TYKCh. 12 - The ability of humans to taste the bitter chemical...Ch. 12 - A man is homozygous dominant for alleles at 10...Ch. 12 - In guinea pigs, an allele for rough fur (R) is...Ch. 12 - Prob. 12TYKCh. 12 - Some recessive alleles have such a detrimental...Ch. 12 - In chickens, feathered legs are produced by a...Ch. 12 - A mix-up in a hospital ward caused a mother with O...Ch. 12 - Having malformed hands with shortened fingers is a...Ch. 12 - Prob. 17TYKCh. 12 - Design an Experiment Imagine that you are a...Ch. 12 - Prob. 19TYKCh. 12 - Prob. 1ITDCh. 12 - Prob. 2ITDCh. 12 - Half of the worlds population eats rice at least...
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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
- Is it true that natural selection allows only the better alleles to be passed onto the next generation? Please explain in details. The explaination should either agree or disagree, not be in the middle.arrow_forwardWhat evolutionary factors can cause allele frequencies to change and possibly lead to a genetic polymorphism? Discuss the relative importance of each type of process.arrow_forwardDescribe the way gene flow stabilizes allele frequency.arrow_forward
- Natural selection means that the environment favors survival of some genotypes. From where does diversity in genotypes come?arrow_forwardExplain why evolutionary biologists monitor selectively neutral polymorphisms as molecular clocksarrow_forwardHarmful alleles persist in some populations, explain how this is possible with natural selection occurring?arrow_forward
- Applying the Hardy-Weinberg equilibrium. 81% of the individuals are homozygous for a recessive allele. What percentage of the individuals would be expected to be heterozygous for this locus in the next generation?arrow_forwardIn modern terminology, we say that organisms which are true-breeding for a particular trait are heterozygous for the allele responsible for that trait. Select one: True Falsearrow_forwardConsider bats, where the folded ear allele (e) is recessive to the upright ear allele (E). If, in a colony of 100 bats, 64 of the bats have upright ears (assuming the colony is at Hardy-Weinberg equilibrium) how many do you expect to be:a) Homozygous Dominant? b) Homozygous Recessive? c) Heterozygous?arrow_forward
- Explain in your own words why natural selection acts on the PHENOTYPE and not the GENOTYPEarrow_forwardEvolution is a change in the allele frequencies that occur in an individual over time. True or false?arrow_forwardA scientist predicts that the kittens born with a congenital birth defect will be 25% based on the hypothesis that it is caused be a recessive gene in that breed of cat. After surveying several litters, he found that 44 out of 128 kittens had the defect. Is his hypothesis correct? Use Chi-Square to solvearrow_forward
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