If plants with round seeds are 100% selected against, how many generations would it take to...
If plants with round seeds are 100% selected against, how many generations would it take to remove the dominant allele? Explain.
Homework Answers
Assuming, round seeds are dominant to wrinkle seeds.
Let, R = round phenotype, r = wrinkle phenotype
As round seeds are selected against, fitness of both RR & Rr will be zero (As either RR or Rr can be round seeds). As neither homozygous dominant nor heterozygous genotype survive to the next generation (As selection against dominant allele is 100%), in the next generation we will get only homozygous recessive genotype, i.e., wrinkled seeds. Thus, in one generation dominant allele will be removed from the population if round seeds (dominant phenotype) are 100% selected against.
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If plants with round seeds are 100% selected against, how many
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