For the purposes of this question,assume that being Rh⁺is a consequence of D and that Rh^-individuals are dd.The ability to taste phenylthiocarbamide PTC is determined by the gene symbolized T tt are nontasters .A female whose mother was Rh^-has the MN blood group,is Rh⁺and a nontaster of PTC,and is married to a man who is MM,Rh^-,and a nontaster.Assume that all the loci discussed in this problem are autosomal and independently assorting.Which of the following is NOT a possible genotype of the children? A)MNddtt B)MMDdtt C)MMddtt D)MNDDtt E)MNDdtt

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Since the mother is Rh⁺ and the father is Rh^-, the possible genotypes of their children can be: - MNddtt (from the mother's MN blood group and both parents being dd for the PTC gene) - MMDdtt (from the father's MM blood group and being heterozygous for the PTC gene) - MNDdtt (from combining the mother's MN blood group and the father being heterozygous for the PTC gene) However, MNDDtt is not possible because the mother does not have the DD genotype for the D gene. She is Rh⁺, meaning she does not have any D alleles to pass on to her children. Therefore, D is not a possible genotype for their children.

For the Purposes of This Question,assume That Being Rh+ is

For the Purposes of This Question,assume That Being Rh⁺is