How can I prove him to be Innocent???
2006-12-05 06:19:21 · 4 answers · asked by vred 1 in Science & Mathematics ➔ Biology
A DNA test
Coach
2006-12-05 06:26:16 · answer #1 · answered by Thanks for the Yahoo Jacket 7 · 0⤊ 3⤋
The mother's blood type doesn't matter. A type AB parent can never have a type O child. There are three alleles in blood--A, B and O. A and B are codominant, meaning that when they show up together you get a mixture: blood type AB. O is recessive, so you only get blood type O if both your blood type alleles are O. Now you get one allele from your mother and one from your father, and you can't pass down an allele you didn't have in the first place. The father must have one A allele and one B allele, meaning he doesn't have an O allele, meaning he can't pass the O allele to his child, meaning his child can't be type O.
2006-12-05 06:23:56 · answer #2 · answered by Amy F 5 · 4⤊ 0⤋
Do a punnet square and you will find out that there are no possible gametes for the offspring to be blood group O, if a Female with Group B, is crossed with male of Group AB
2006-12-05 07:24:07 · answer #3 · answered by Fatima A 3 · 0⤊ 1⤋
It is called a DNA test
2006-12-05 06:28:16 · answer #4 · answered by norsmen 5 · 0⤊ 2⤋