Whats the likelihood that two people with sickle-cell trait will have children with sickle-cell anemia?

Answer 1

This is a codominant trait.

If SS = sickle cell anemia
SN = trait
NN = normal

Then two parents that are SN x SN have a 1/4 chance of having a child with sickle cell anemia, as well as 1/4 chance of NN normal, and 1/2 chance of SN trait.

Answer 2

I'm assuming that when you say "sickle-cell trait" you mean that both of them carry the gene for sickle-cell anemia, but neither actually has the disease. In other words, they're both heterozygous for that gene, with one normal gene and one sickle-cell gene.

For a child to have sickle-cell anemia, he/she would have to have two sickle-cell genes. The odds of the mother passing down a sickle-cell gene are 1/2, and the odds for the father are the same. So the odds of BOTH of them passing down the gene are 1/2 * 1/2, or 1/4. There's a 1-in-4 probability that any given child will have sickle-cell anemia.

If you want to know the odds that ANY of their children will have it, you'll first have to say how many kids they have.

Answer 3

If you use the box method it is 75% that the children will inherit and 25% that the children will NOT inherit the sickle-cell trait.

Answer 4

it relatively is a false impression that sickle cellular trait agencies won't be able to have issues. They commonly stay a typical life, yet approximately 5% might have indications fairly with rigidity, disease, or modifications in altitude

Answer 5

It depends if the trait is recessive or dominant if it recessive the children might have it but if its dominant it is almost a certainty

Answer 6

it is very likely that your children will inherit the trait

Answer 7

25%.