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Blood typing questions?
Cross a parent with homozygous type A blood with a parent with heterozygous type B blood. What will be parent 1's blood type? Parent 2's?
What are all the different letter combinations that might show up in their children?
What are all the different blood type that might show up in their children?
2 Answers
- Anonymous7 years agoFavorite Answer
_____A_____A__
B___AB___AB____
0___AO___AO_____
Excuse the messy Punnett square but ..
Parent 1 has to be AA because homozygous means both alleles are the same and it has to be A because its blood type A. Parent 2 has to be BO because heterozygous means 2 different and it can't be AB because then it would be blood type AB.
Half the childen will have AB and half will have AO.
This means half the children will have blood type AB and half will have blood type A, as A is dominant over O.
- 7 years ago
Since the parents are heterozygous, this means they each have 2 different alleles for this gene.
Parent 1 is Ai and parent 2 is Bi
The kids can have type A blood (Ai), type B blood (Bi) type AB blood (AB) and type O blood (ii). Do a Punnet's square for yourself and see if you can come to this answer.
Source(s): PhD in genetics
