Question #6424388Single Choice

Biology

Question

A geneticist is studying the inheritance of an X-linked recessive trait in a family. In one generation, there are 4 sons and 2 daughters. If the mother is a carrier and the father is unaffected, how many sons are expected to inherit the trait?  

Options

A
    0  
B
    1  
C
    2  
D
    3  

Answer & Analysis