What are the genotypes of the mother, father, and child?

1) (13 points) The ability to curl your tongue up on the sides (T, tongue rolling) is dominant to not being able to roll your tongue. A woman who can roll her tongue marries a man who cannot. Their first child has his father’s phenotype. What are the genotypes of the mother, father, and child?

2)  (13 points) In humans, blood type is an example of codominance with the ABO gene. A man and a woman want to know their blood types.  If their first child has an ‘O’ blood type and their second child has type AB blood.  What are the blood types of the parents, and what are the genotypes?

3) (13 points) The mother is blood type O and the father is blood type A. What are the possible blood types of the offspring?

4) (13 points) In mice, brown eyes (B) are dominant over blue (b). A homozygous brown-eyed male mouse mates with a blue-eyed female and they have offspring.  What are the phenotypes and genotypes of their offspring?  What are the genotypes of the parents?

5) In some cats the gene for tail length shows incomplete dominance. Cats with long tails are homozygous dominant (TT) and cats with no tails are homozygous recessive (tt). Heterozygous cats have short tails (Tt). For each of the following construct a punnett square and give phenotypic and genotype ratios of the offspring.
a) (12 points) a long tail cat and a cat with no tail
b) (12 points) a long tail cat and a short tail cat
c) (12 points) a short tail cat and a cat with no tail
d) (12 points) two short tail cats.

  • Posted: 4 years ago
  • Due: 14/10/2015
  • Budget: $5

 

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What are the genotypes of the mother, father, and child? was first posted on April 23, 2019 at 7:34 am.
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