Sickle cell anemia is a genetic disease that occurs only if a child inherits two recessive genes. Each child receives one gene from the father and one from the mother. A person can be characterized as follows: The person can have:
(a) two dominant genes (cannot transmit the disease to a child),
(b) one domi- nant and one recessive gene (has the trait and is therefore a carrier who can pass on the disease to a child, but does not have the disease), or
(c) has both recessive genes (in which case the person has the disease and is a carrier of the disease). For each parent there is a 50-50 chance that the child will inher- it either the dominant or the recessive gene. Calculate the probability of the child having the disease if:
a. Both parents are carriers
b. One parent is a carrier and the other has two dominant genes
c. One parent is a carrier and the other has the disease Calculate the probability that the child will be a carrier if:
d. Both parents are carriers
e. One parent is a carrier and the other has the disease
f. One parent is a carrier and the other has two dominant genes