Question

The fact that Usher syndrome is an autosomal recessive disorder means that
a) both parents must carry the gene and there is a 50% chance of the child having the syndrome.
b) one parent can carry the gene and there is a 25% chance of the child having the syndrome.
c) both parents must carry the gene and there is a 25% chance of the child having the syndrome
d) one parent can carry the gene and there is a 50% chance of the child having the syndrome.

Answer

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