A womans maternal grandfather had a disease. The woman's parents are normal. You
married this woman, and had a son with the disease. What is the most likely mode of
Sure. So, there are 4 generations. woman's grandfather had it, and woman's son has it.
Boys are affected, women pass it on. (Remember it is her maternal granddad that has
Lets say their are 20 people on an isolated island and are to repopulate it (10 males +
10 females) and of this population 2 people are carriers of cystic fibrosis (recessive).
Assuming the frequency of this allele does not change as the population grows, what
will be the incidence of cystic fibrosis on the island? Does anyone know how to answer
20 people on island and 2 people are Aa. This means that 2pq =2/20. From this
information you cannot calculate the freq of q^2.
2/40 is = to q. You would then need to calculate q^2. However, you are assuming the
rest of the population is AA.
a man's maternal uncle and maternal grandfather had a disease. The uncle's daughter
also had the disease. The man's mother is normal. What is th