This question refers to the abo blood type locus. remember that the a and b alleles are codominant to each other and both are dominant to the o allele. assume no epistatic interactions with the h locus. a woman is blood type ab. her child is blood type b. she wants to get child support from a man who is blood type a. can this man be the father of the woman's child based on these data?
yes
no

No

Explanation:

If the mother has a phenotype AB, she only can have the genotype . This because A and B are codominant alleles.  The child is blood type A, so he can be heterozygote or homozygote for allele B.  The possible father is blood type A and he can be heterozygote or homozygote for allele A.  Hence, possibles genotypes are:

Mother:

Child:   or

Possible father: or

If the father is  , children of these parents can have the genotypes shown in the first Punnet Square.

And, if the father is  , possible progeny will be the one on the second Punnet Square.

So, it is impossible for this couple to have a son blood type A.

"griffith's experiment discovering the "transforming principle" in pneumococcus bacteria. griffith's experiment, reported in 1928 by frederick griffith, was the first experiment suggesting that bacteria are capable of transferring genetic information through a process known as transformation." - griffith's experiment.

132

explanation:

12