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IMG SURVIVOR
06-04-2008, 12:13 PM
If one parent has sickle cell disease and the other has the trait, what proportion of their children will have the disease?

A- less than 1%
B- 25%
C- 50%
D- 75%
E- 100%
roth spot
06-08-2008, 08:27 PM
i think its 25%because of autosomal recessive inheritance.
Unaccomplished
06-13-2008, 08:26 PM
50%.. because one is rr[disease] and one is Rr[trait]
jimmy123123in
08-27-2008, 05:37 AM
parents are Rr and RR so RR RR rR rR profile of children.. so 50 %