Question

vitamin d - resistant rickets is an x-linked dominant bone disorder. a man with this form of rickets marries a normal woman. what proportion of the couple's daughters is expected to have vitamin d - resistant rickets? view available hint(s)for part a 100% 25% 0% 50%

Answer 1

X-linked dominant inheritance pattern for vitamin D-resistant rickets

Step-by-step explanation:

When an abnormal allele for a gene that occurs on the X chromosome is dominant over the normal allele, the pattern is described as X-linked dominant. This is the case with vitamin D-resistant rickets: an affected father would pass the disease gene to all of his daughters, but none of his sons, because he donates only the Y chromosome to his sons.

If it is the mother who is affected, all of her children—male or female—would have a 50 percent chance of inheriting the disorder because she can only pass an X chromosome on to her children.