Allele H compels you evolutionarily to help your cousins, with which you have the relationship (r=^ * ?^ * ) (This is cooperation directly with cousins, not their offspringYour cousin receives a benefit of 16 fitness units and the behavior costs you 1.5 fitness units. Would you expect allele H to spread in the population ? Use Hamilton's Rule (rb>c or rb -c)
Added by George D.
Step 1
- r (relatedness coefficient) is given as the relationship with your cousins, which is represented by the expression (r=^ * ?^ * ). We need to clarify this expression to determine the exact relatedness coefficient. - b (benefit to the cousin) is given as 16 Show more…
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Advantageous dominant alleles have a hard time going to fixation in a large population because: The alternative allele is recessive so the advantageous allele in heterozygotes is neutral The alternative allele is recessive so the advantageous allele in heterozygotes is selected against Genetic drift causes the dominant allele to decrease in frequency A and C
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An allele, "r", is recessive to "R" such that Rr homozygotes have wildtype (RR) fitness, but rr homozygotes fail to develop properly and die a few days after fertilization. If R and r are initially present at equal frequencies, natural selection: [Choose all that apply] Group of answer choices a. will tend to keep the population in Hardy-Weinberg Equilibrium b. will not favor either allele c. will favor Rr heterozygotes as a form of overdominance d. will initially act strongly against the r allele e. will not act strongly against the r allele once it becomes rare in the population
When alleles at a locus act in a semidominant fashion on fitness, the relative fitness of the heterozygote is midway between the two homozygous classes. For example, genotypes with semidominance at the $A$ locus might have these relative fitnesses: $w_{A / A}=1.0, w_{A / a}=$ $0.9,$ and $w_{a / a}=0.8$ a. Change one of these fitness values so that $a / a$ becomes a deleterious recessive allele. b. Change one of these fitness values so that $A / A$ becomes a favored dominant allele.
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