Type-O Woman mates w/ a man w/ Type A.(Both woman's & husbands father is type-B). What is probability that..

Question

Type-O Woman mates w/ a man w/ Type A.(Both woman's & husbands father is type-B). What is probability that the child will have type O blood?

75%
100%
0%
50%
or 25%

My question is, how does the blood type of the womans and husbands father,effect the outcome of the childs?

Answer 1

Blood types have 2 dominant (A and B) and 1 recessive (O) allele. This actually gives you more phenotypes than "normal"
The genotypes and phenotypes are:
AA, AO both A
BB and BO, both B
AB, AB blood type
OO, O blood type.

Now in realation to your question. Asking about the parents helps you determine if someone is homozygous dominant eg AA or BB or herterozygous AO or BO.
In this case they tell you the woman is O, so thats easy, she can only have an OO genotype (recessive traits are easy to figure out the genotypes). Technically its irrelevant about hte womans father, as she can only have 1 possibly genotype
The father is A. That means you don't know if he is AA or AO. If his father was B, that means his genotype is either BB or BO. If its BB then his son MUST be B or AB, which he is not (remember both A and B are dominant and BOTH are expressed), so his father must be BO. Because he is A, he must have received the O allele from his father to becoem AO (if he got the B he would be AB)
SO................ it helps you to determine the parental genotype, in particular for dominant conditions to show if they are homozygous or heterozygous. Sometimes they say true breeding for eg AA, BB and hybrid for AB

Answer 2

The woman is type O; her genotype is OO (or ii).
The man is type A; his genotype is AO (or IAi) because his father is type B and cannot have given him a second A allele.

Parents: OO x AO (or ii x IAi)
Gametes: O, O on the left side of the PUnnett square from Mom. A, O on the top of the Punnett square from Dad.

Boxes in the Punnett square:
First row of boxes: OA, OA
Second row of boxes: OO, OO

The boxes have 2 Type A: 2 Type O which reduces to 1 Type A: 1 Type O. The child has a 50% chance of having type O blood.

Telling us about the fathers of the two parents just tells us what the second allele of the father is. The Mom has to be OO, so we didn't really need to know about her father. The Dad could be AA or AO, so we need to know that his father is Type B to know that the second letter is an O, not another A.

Answer 3

sort C: different. My husband is the two sturdy, and type. Intellectually, i'm extra suitable. i'm no longer asserting this to be propose, I basically understand i'm extra clever than my husband. He admits it, too. I cope with our funds, he makes all of the funds (for now, i'm going to be getting a job as quickly as we pass back to the States), he's soft to my desires, i urge and help him...yet i'm nonetheless the submissive one, for the main section. i'm no longer a doormat, yet he does have the extra dominating character. I also have a tendency to handle submissive adult adult males horribly. i do no longer propose to, yet I do. I basically mandatory the the perfect option guy to be a sort C.

Answer 4

if the woman has a girl, 100% that the type will be O. if woman has a boy, the type will be the father's no matter what