If two prospective parents both have siblings who had a recessive genetic disorders, what is the chance that they would have a child who inherits the disorder?
2007-11-01 06:56:27 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Biology
If they each have a sibling with a recessive disorder, the their parents must all be heterozygous. Since those two prospective parents are not affected by the disorder, they each have a 2/3 chance of being a carrier. So, they probability that they are both carriers is 2/3 X 2/3 or 4/9. Given that, 1/4 of their offspring would be affected, so the overall probability is 2/3 X 2/3 X 1/4 = 1/9
2007-11-01 07:04:52 · answer #1 · answered by hcbiochem 7 · 0⤊ 0⤋
hahha YEAS i'm getting IT!! xDDDD ----im like Hermione's witch cousin :P so im great smart whilst it is composed of Harry Potter xDD i blame my mom for making me a ginger (i had to tent my %. to make the pink no longer so noticable)
2016-12-30 12:54:44 · answer #2 · answered by ? 4 · 0⤊ 0⤋