why would all the daughters of a man with an X-dominant condition also have that condition?...
Homework Answers
All the daughters would have the condition because one of the X chromosome that they have comes from the father and since their father have only one X chromosome which is affected, that single allele in that chromosome is enough to make the daughters affected.
His sons would not be affected as they aquire the Y chromosome from their father and X chromosome from their mother. So as long as mother is normal, the sons would be normal as well.
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