The disease inheritance pattern exemplified in the given pedigree analysis can be:
1. | Hemophilia | 2. | Red-green colour blindness |
3. | Phenyl ketonuria | 4. | Polydactyly |
On the basis of information given in the pedigree, if II 3 marries a hemophilic man, what is the probability that her first child will be normal?
1. | 1/4 | 2. | 1/2 |
3. | 3/4 | 4. | 0 |