The following pedigree is for the ABO blood type group, which ...

Question

The following pedigree is for the ABO blood type group, which is an example of autosomal inheritance. Using the I^A, I^B, i for the alleles, fill in the top half of each box/circle with the genotype. Also, fill in the bottom half of each box/circle with the phenotype (A, B, AB, or O blood type). If it is impossible to know for certain a specific allele in the genotype, then place a “?” as a placeholder to represent the allele that is in question.

Accepted Answer

Okay, everyone, The following pedigree is for the A B o blood type group, which is an example of autism. A inheritance using the Excuse me, the A, B and I A leal's fill in the top half of each box or circle with the Gina type. Okay, Also, fill in the bottom half of each box or circle with the FINA type as a B A B or O blood type. If it is impossible to know for certain a specific legal in the genotype, then place a question mark as a placeholder to represent the illegal. That is in question. Okay, this is a big problem. Don't get overwhelmed by this. We have all the information to be able to answer this question and just take your time when you do these types of questions. Okay. All right. So we're gonna be talking about blood type groups. So what? Your blood type is in this particular family and the illegals that we're gonna have our the a l e o the be a Leo and the I a Leo. Remember that A and B are co dominant, meaning that when they are together, they're both expressed. And remember that the little I'll eel is recessive. So the A and B are co dominant. The little I is recessive, and you can have type a blood be blood A B blood or O blood. Okay, so first off, let's just start with the parents. I'm going to start with these parents right here so I can see that their Children are type O. These two Children, their son and their daughter are type O, which is Hamas, I guess. Recessive. But they tell us that these two parents air type a blood, which means that these parents must have the A Leo because they're type A. But they must also have the recess of Leo because they have type O Children. So this must be there, Gina type here. Now, can we figure out their sons Gina type? Well, their son could have a genotype. He could have little I little I gina type. He could have a I gina type, so we don't know quite yet. Let's see if we can figure out from his Children. But first, I'm going to do the other side of the pedigree. So I'm going to dio over here, this mother and father and their Children. Okay, so we can see that the mother is type O. We don't know anything about the dad, but we can see that his son is type A. So the mother must have given her recess. Ivo Lille. And the father must have given his a L e O. Okay, so now is he type a blood, No. Realize that his daughter is type B, and the mother must have given her the recess of Lille. Which means the father must have given her the B alil. So this father is actually type A B blood. Okay, so now can we figure out their other daughter right here again? Not yet. We're gonna have to look at their Children. Okay, So it's important to note that this male had Children with this female and these air their Children below. Okay, so we know that the sun one of the sons, the sun in the middle right here is type O. There's only one genotype for type O, which is Hamas, I guess. Recessive. So we can immediately right in his genotype Hamas, I guess. Recessive. Now they tell us. Another interesting thing is this individual right here. This son is type A B. There's only one Gina type for type A B is well, so this son must be having a Leo and a B olio. Okay, so these parents were able to have a typo child and a type A B child. So let's that means that one of them has to be type A and one of them has to be type. Be. So what is? The father will remember that his parents are both type A, so he could not have given the Be a Leo. So this father must be type A and he is hetero zygotes with one a Lille and one recessive I'll Leo. But remember, they had a type A B son. So that means that the mother must be type B, so she's gonna be type B. But because she had a Hamas, I guess. Recessive son. She must be a headers like headers. I go as well. Okay, So that means that this individual's type A this one is type B. Okay, so now let's figure out for the daughter. The one left in green. What is her Gina type? Well, she's type a blood so that means that the father must have given the a Leo. And that means the mother must have given her recessive little I a Leo. Okay, so now we figured out that family. Let's figure out this one right here, this this woman, I'm gonna highlight her in yellow. She is type A B, meaning that she only has one genotype. So she's going to have won a Lille and one b. Leo. Okay, I'm gonna scroll down a little bit so we can see the rest of boxes. So now let's figure out their Children. Both the father and the mother are type A B. They have a type A son. What is his genotype going to be? Well, he must have gotten one a little from the dad. And one a little from the mom. Okay, Now we have a type a baby daughter again on Lee one genotype, and then we have a type B son. Remember that the father must have given a B l ile, and the mother must have given a b. Alil because these two parents do not have the recess of illegal, so they cannot give it. Okay, so we figured out that family. Let's move over to this family here, and we're almost done. Okay, so we have a type. A mother, a Type B father. Now, the key thing to see here is that they had a homeless, I guess. Recessive type o child daughter type oak daughter. So that means that the mother must have given a recess of Alil. And the father must have given a recess of a Leo. So the father must be type B with one b alil and one recess of alil. Okay, so we figured that out. Now, what about the son? This son is type A. That means that this son must have gotten an a Leo from the mother and the recessive I'll I'll from the dad. Okay, last one super easy. Because this daughter can only have one genotype, and that is that She got the a little from her mother and the b alil from her father and everyone that is every single person in this pedigree. And we figured out how all of these different Children got their blood types. Okay, everyone, let's move on to our next video

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