BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 20, Problem 4A
Summary Introduction
To determine: The studies that would help in testing the given idea and also include the types of traits that would be measured.
Introduction: The peacocks that have the longer tail feathersare preferable by the peahens. The reason is that longer and heavier the tail is,the more will be the eyespots on the feather. The illusion of these eyespots of peacock feathers makes the peahens more attracted to mating.
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Based on the text on cockroaches.
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Chapter 20 Solutions
BIOLOGY
Ch. 20.1 - Define evolution and population genetics.Ch. 20.1 - Prob. 2LOCh. 20.2 - Explain the HardyWeinberg principle.Ch. 20.2 - Describe the characteristics of a population that...Ch. 20.2 - Prob. 3LOCh. 20.3 - Define the five processes that can cause...Ch. 20.3 - Prob. 2LOCh. 20.4 - Prob. 1LOCh. 20.4 - Prob. 2LOCh. 20.4 - Demonstrate how the success of different...
Ch. 20.5 - Prob. 1LOCh. 20.5 - Prob. 2LOCh. 20.5 - Prob. 3LOCh. 20.6 - Define frequency-dependent selection, oscillating...Ch. 20.6 - Prob. 2LOCh. 20.7 - Define and contrast disruptive, directional, and...Ch. 20.7 - Prob. 2LOCh. 20.8 - Explain how experiments can be used to test...Ch. 20.9 - Prob. 1LOCh. 20.9 - Prob. 2LOCh. 20.10 - Prob. 2LOCh. 20 - If all white cats died, what proportion of the...Ch. 20 - Assuming that the values on the x-axis represent...Ch. 20 - Prob. 3DACh. 20 - Prob. 4DACh. 20 - Examine the index of copper tolerance on nonmine...Ch. 20 - Prob. 6DACh. 20 - Why are rare alleles particularly likely to be...Ch. 20 - Prob. 2IQCh. 20 - Prob. 3IQCh. 20 - Prob. 4IQCh. 20 - Prob. 5IQCh. 20 - Prob. 6IQCh. 20 - Prob. 7IQCh. 20 - Prob. 8IQCh. 20 - Prob. 9IQCh. 20 - Assortative mating a. affects genotype frequencies...Ch. 20 - When the environment changes from year to year and...Ch. 20 - Many factors can limit the ability of natural...Ch. 20 - Stabilizing selection differs from directional...Ch. 20 - Founder effects and bottlenecks are a. expected...Ch. 20 - Relative fitness a. refers to the survival rate of...Ch. 20 - For natural selection to result in evolutionary...Ch. 20 - Prob. 8UCh. 20 - In a population of red (dominant allele) or white...Ch. 20 - Genetic drift and natural selection can both lead...Ch. 20 - Prob. 3ACh. 20 - Prob. 4ACh. 20 - In Trinidadian guppies a combination of elegant...Ch. 20 - On large, black lava flows in the deserts of the...Ch. 20 - Based on a consideration of how strong artificial...
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- EVOLUTION LINK Could hawthorn and apple maggot flies be considered an example of assortative mating, which was discussed in Chapter 19? Explain your answer.arrow_forwardBecause the reproductive success of female Hanuman langurs (Semnopithecus entellus) is almost certainly lowered when a newly installed male kills their young infants, selection should favor countermeasures against infanticidal males. In this light, why might already pregnant females mate with a new male soon after a takeover even though they are not ovulating? What significance do you attach to the discovery that when mares are impregnated by stallions at stables away from their home locations, they will also copulate repeatedly with the males in their home stables upon their return?arrow_forwardCompare the genetic relationship of the parent pest and its offspring. Use the word: GENETICALLY IDENTICAL/DIFFERENT, GENETIC RECOMBINATION. USE THIS SENTENCE STARTER: The parent pest and its offspring are (genetically identical/different) because...arrow_forward
- Based on the text for cockroaches mating: 1. Compare the genetic relationship of the parent pest and its offspring Use the word: GENETICALLY IDENTICAL, GENETIC RECOMBINATION. 2. Predict what factors in the environment can be altered to stop the pest from producing and why?arrow_forwardVoles that are born in the Spring have thin coats as adults, while voles that are born in the Fall have thick coats as adults. Most voles live only a few months; voles born in the Spring are alive during the warm summer season, while voles born in the Fall are alive during the cold winter season. The environment experienced by the mother during pregnancy determines coat thickness in the offspring. Now consider a situation in which the environment the vole mothers during pregnancy changes, such that voles born in the Fall now have thin coats. Assume in this case that the Winters are still cold. This scenario provides an example of which of the following hypotheses? a.Environment mismatch hypothesis b.Endocrine disruptor hypothesis c.Thrifty genotype hypothesis d.Plasticity first hypothesisarrow_forwardImagine we identify a gene that is directlyresponsible for the effects of vasopressin on male mammals, includinghumans—we will call it trust1—that leads to the productionof a vasopressin receptor in the brain, which we will callTRUST1. There are different versions of trust1, all of which lead todifferent levels of the behavior associated with this neuropeptideon male behavior. Give some examples where it would be a goodidea to know a particular male’s genotype—that is, which of thetrust1 genes he has. Give an example of when you think science hasgone too far and this information should not be knownarrow_forward
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- Multiple choice (one answer is correct) a. The food eaten by the female parent as a caterpillar determines the different caterpillar morphologies. b.Temperature determines the different caterpillar morphologies. c.Day length determines the different caterpillar morphologies. d. Food type determines the different caterpillar morphologies.arrow_forwardCan you think of any unusual situation where you might be able to have a Male Calico cat? Explain how this might occurarrow_forwardA black mouse mate with brown mouse and all the offspring are black .why are no brown offspring producedarrow_forward
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