Mutations can sometimes add genetic diversity to populations. Explain why new mutations in somatic (body) cells are NOT a source of genetic diversity in populations.
Why might a traight (like height in humans) show continuous variation?
Explain why most RARE recessive alles in populations are deleterious (disease-causing)?
Hair color in a new breed of goats is controlled by two alleles: A and a. Goats that have genotype AA or Aa have brown hair and goats that have genotype aa have red hair. (a) If goats that have brown hair have higher fitness than goats with red hair, what will happen to the frequency of the a allele in this population? (b) will the a allele disappear completely from the population if there is negative selection on it? Why or why not? (c) Is hair color in these goats considered a polyphenism? Why or why not?
Mutations can sometimes add genetic diversity to populations. Explain why new mutations in somatic (body) cells are NOT a source of genetic diversity in populations.
Why might a traight (like height in humans) show continuous variation?
Explain why most RARE recessive alles in populations are deleterious (disease-causing)?
Hair color in a new breed of goats is controlled by two alleles: A and a. Goats that have genotype AA or Aa have brown hair and goats that have genotype aa have red hair. (a) If goats that have brown hair have higher fitness than goats with red hair, what will happen to the frequency of the a allele in this population? (b) will the a allele disappear completely from the population if there is negative selection on it? Why or why not? (c) Is hair color in these goats considered a polyphenism? Why or why not?
