Question: 1a) A Population Of Diploid Organisms In A Particular Habitat Exhibits A Trait Influenced By Two Alleles (A1 And A2) At A Single Locus. The Homozygotes Have Equal Fitness, While The Heterozygote Has The Highest Fitness. Initially, The Frequency Of A1 In This Population Is 1 And The Frequency Of A2 Is 0. Which Forces Of Evolution Can Increase The Frequency …
1a) A population of diploid organisms in a particular habitatexhibits a trait influenced by two alleles (A1 and A2) at a singlelocus. The homozygotes have equal fitness, while the heterozygotehas the highest fitness. Initially, the frequency of A1 in thispopulation is 1 and the frequency of A2 is 0. Which forces ofevolution can increase the frequency of A2 alleles? a. selectionand genetic drift, b. mutation and non-random mating, c. migrationand mutation, d. migration and non-random mating, e. all of theabove.
1b) Referring to question 1a, once the population reaches theadaptive peak, the mean fitness of the population remains below 1.This is known as:
| a. |
genetic drift, |
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| b. |
linkage disequilibrium, |
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| c. |
pleiotropy, |
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| d. |
genetic load, |
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| e. |
all of the above. |
1c) If in comparison to heterozygotes both homozygotes have ahigher fitness, the shape of the adaptive landscape will be:
| a. |
flat, |
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| b. |
concave or curving inward, |
|
| c. |
tilted to the right, |
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| d. |
convex or curving outward, |
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| e. |
all of the above. |
