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Pedigree D is most likely X-linked dominant. What is/are the genotype(s) of the parent(s) that transmitted the mutant allele(s) to their offspring

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Answer and Explanation:

Note: In the attached file you will find the pedigree and the genotypes of each member.

Parentals)  XDXd    x     XdY

  • The female is heterozygous for the trait, transmitting the mutant allele
  • The male is not affected.

According to the pedigree, they had the following progeny:

  • XdXd healthy female
  • XdY healthy male
  • XDXd affected female (this individual transmitted the mutant allele)
  • XDY affected male (this individual transmitted the mutant allele)

-Both healthy individuals mated with another two healthy individuals. Their whole progeny was healthy.

-The affected female (XDXd) mated with a healthy male (XdY), and they produced 100% healthy individuals

-The affected male (XDY) mated with a healthy female (XdXd) and they had three affected females, XDXd.

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