Albinism in humans is inherited as a simple recessive trait. For ...

Question

Albinism in humans is inherited as a simple recessive trait. For the following families, determine the genotypes of the parents and offspring. (When two alternative genotypes are possible, list both.)

Two normal parents have five children, four normal and one albino.

Accepted Answer

everyone. Let's take a look at this question. Together in humans, cystic fibrosis is an autism recessive disease, determine the genotype of a couple who has two healthy Children and one with cystic fibrosis. Assume that Big F. Is the normal allele and small F. Is the cystic fibrosis. Since we're looking at healthy Children and Children with cystic fibrosis, the healthy individuals will have the genotype Big F. Big F. Or big F little F. So that hetero zegas or that Hamas is dominant and then the affected individuals will have the genotype small F. Small F. So since we have two healthy Children and one with cystic fibrosis, we have to look for a combination of these and one of this. And so the best possible outcome would be to parents that are hetero sickness because we know that we get that 3 to 1 ratio. And when we do that cross we have big F. Big F. Big f. Little F. Big f. Little F. And little F little F. We have here we have three. This one which this is the affected, whereas the other three the healthy ones. And so the only way that we can end up with two healthy Children and one with cystic fibrosis is if both parents have that hetero Zegas genotype, which would make answer choice D the correct answer because any other combination would result in either all the Children being healthy or more than one being affected with cystic fibrosis. Hope you found this video to be helpful. Thank you and goodbye

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Albinism in humans is inherited as a simple recessive trait. For the following families, determine the genotypes of the parents and offspring. (When two alternative genotypes are possible, list both.) Two normal parents have five children, four normal and one albino.