Question

18. In cats, blood type A results from an allele (IA) that is dominant over an allele (iB) that produces blood type B. There is no O blood type. The blood types of male and female cats that were mated and the blood types of their kittens follow. Give the most likely genotypes for the parents of each litter. Male parent Female parent Kittens 6 kittens with blood type B 8 kittens with blood type A B b. A B C. 10 with type A 4 with type A, 1 with type B A A e. B A f.

Answer 1

b. Genotype of male parent - i^Bi^B

Genotype of female parent - i^Bi^B

c. Genotype of male parent - i^Bi^B

Genotype of female parent - I^AI^A

e. Genotype of male parent - I^AI^A

Genotype of female parent - I^AI^A

f. Genotype of male parent - I^Ai^B

Genotype of female parent - i^Bi^B

^Explanation

^{00 B GAGA BT4.B TAB ;B; B - B blood group IA B - A blood group TAGA Abloid group BliB e JA TA BB;B;B}

The above picture shows the punnet's square for the corresponding cross between kitten's parents.

In b, c and e, parents are homozygous. In b, kittens and parents have B blood group. In c, the kitten produced are heterozygous but have A blood group. Here, A dominant over B blood group. In e, parents and kittens are homozygous and have A blood group. In f, male parent is heterozygous but have A blood group and the female parent had B blood group ( recessive) . That is why, the kitten produced are with A or B blood group.