Draw a pedigree containing two parents and four children...

Question

Draw a pedigree containing two parents and four children. Both of the parents have AB blood type. The first child is type A, the second child is type AB, and the third child is type B.

Assign the genotypes to these five people.

Accepted Answer

Hi, everyone. Let's look at our next question. The A BO gene has three alls specifically I superscript A I superscript B and little I, if an individual has I A little I genotype, what is the corresponding phenotype equivalent? Well, I A is going to be the allele for blood type A and it's codominant with IB. But in this case, the second allele is little I which is the recessive allele for blood type O. So in this case, this genotype will lead to a phenotype of blood type A. So that's gonna be answer choice. A blood type A I about to be thorough. We look at our other answer. Choices. Choice B says blood type O. Well, that phenotype will come from a genotype of little I little I, since it's a recessive phenotype, the person needs to be homozygous recessive to express that. So that's why choice B isn't correct. Then choice C blood type A B comes from the codominant inheritance of one A and one B ally. So that genotype would be big eye A big IB. So that's not correct. And then finally choice D blood type B uh will look similar to this. But obviously with the alley four B so they guy B and either uh there's two different genotypes that can lead to that either a second B allele, so IBIB or similar to the one given in our problem IB and then little I, since it's a dominant allele, but that's not what we're looking for. So choice D is not our answer. So again, if an individual has the big eye, a little I genotype, what is its corresponding phenotype? Equivalent choice? A blood type? A? See you in the next video.

Draw a pedigree containing two parents and four children. Both of the parents have AB blood type. The first child is type A, the second child is type AB, and the third child is type B.

Assign the genotypes to these five people.

Key Concepts

Blood Type Inheritance

Genotype and Phenotype

Pedigree Analysis

Watch next

Draw a pedigree containing two parents and four children. Both of the parents have AB blood type. The first child is type A, the second child is type AB, and the third child is type B.Assign the genotypes to these five people.

Key Concepts

Blood Type Inheritance

Genotype and Phenotype

Pedigree Analysis

Watch next

Draw a pedigree containing two parents and four children. Both of the parents have AB blood type. The first child is type A, the second child is type AB, and the third child is type B.

Assign the genotypes to these five people.