1.

If a man with an X-linked dominant disease has six sons with a woman having a normal complement of genes, then the sons will (A) not show any symptoms of the disease (B) show strong symptoms of the disease (C) three will show a disease symptom, while three will not  (D) five will show a disease symptom, while one will not 

Answer»

Correct option (A) not show any symptoms of the disease

Explanation:

Son get their X chromosome from mother. 



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