Question

1) The allele for free-hanging earlobes (E) is completely dominant over the allele for attached earlobes (e). A man with attached earlobes marries a woman with free-hanging earlobes. All of their children have free-hanging earlobes.

What is the woman's genotype?

2)The allele for free-hanging earlobes (E) is completely dominant over the allele for attached earlobes (e). A man with attached earlobes marries a woman with free-hanging earlobes. All of their children have free-hanging earlobes.

What is the genotypic ratio of their offspring?

3) Sickle-cell anemia is an autosomal disorder that is only contracted when an individual inherits two copies of the recessive allele k.

In one family, 2/4 of the children do not have sickle-cell anemia, while 2/4 of the children do have sickle-cell anemia. What is the genotypic ratio of these offspring?

4)Sickle-cell anemia is an autosomal disorder that is only contracted when an individual inherits two copies of the recessive allele k.

In one family, 2/4 of the children do not have sickle-cell anemia, while 2/4 of the children do have sickle-cell anemia. What are the genotypes of each parent?

Answer 1