Becker muscular dystrophy is an X-linked recessive inherited…
Becker muscular dystrophy is an X-linked recessive inherited disorder characterized by slowly progressing muscle weakness of the legs and pelvis. The allele for Becker muscular dystrophy is m, while the normal allele is M. Based on the pedigree below, what grandparent (A, B, C, or D) did the grandchild inherit the allele for Becker muscular dystrophy (m) from?
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