Identify and describe (explain) the four forces of evolution. Imagine a scenario where a population of lizards encounters another population of lizards and interbreeding occurs. Over time, how would the genetic variation look within each population of lizards (would it increase or decrease)? Now imagine you have sandy beaches that are inhabited by populations of crabs that are red or yellow or green. Somehow one of the beaches becomes more and more filled with golden sand while the others stay multicolored. Over time, how would the genetic variation look between the populations on the beaches?

Identify and describe (explain) the four forces of evolution. Imagine a scenario where a population of lizards encounters another population of lizards and interbreeding occurs. Over time, how would the genetic variation look within each population of lizards (would it increase or decrease)? Now imagine you have sandy beaches that are inhabited by populations of crabs that are red or yellow or green. Somehow one of the beaches becomes more and more filled with golden sand while the others stay multicolored. Over time, how would the genetic variation look between the populations on the beaches?

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter19: Population Genetics And Human Evolution

Section: Chapter Questions

Problem 20QP: Natural Selection Affects the Frequency of Genetic Disorders Will a recessive allele that is lethal...

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In an alternate universe, all the genes in all species haveonly two alleles, one dominant and one recessive. Wouldevery trait have only two phenotypes? Would all membersof a species that are dominant for a given gene have exactlythe same phenotype? Explain your reasoning.
n your own words, explain the factors that lead to the Phenotypic variation andits importance to evolution. explain thoroughly
In your own words, explain the factors that lead to the Phenotypic variation andits importance to evolution. explain clearly
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Tay-Sachs disease is a recessive genetic disease. Individuals with this disease rarely survive past the age of four. In the general population, approximately 1 person in 300 carries the allele for this disease. However, in some populations, including the Irish Americans, the Ashkenazi Jews and the Cajuns from Louisiana, the proportion of Tay-Sachs carriers is much higher (1 in 27 to 1 in 50) than in other populations. Which evolutionary scenario can be predicted to produce a high frequency of Tay- Sachs disease in these populations? All three populations descend from a small number of settlers O These populations experienced stabilizing selection These populations have higher than average mutation rates These populations experienced disruptive selection The Tay-Sachs allele is advantageous at the heterozygous state
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