A woman with blood group A, who is heterozygous for the ABO antigens, has a child with a man with blood group O. What is the chance that this child will have blood group O?
Understand the Problem
The question asks about the probability of a child having blood type O, given that the mother has blood type A (heterozygous) and the father has blood type O. Understanding the genotypes and how they are inherited is key to solving this problem.
Answer
50%
The chance that the child will have blood group O is 50%.
Answer for screen readers
The chance that the child will have blood group O is 50%.
More Information
The woman has a genotype of IAi (heterozygous A), and the man has a genotype of ii (blood type O). Using a Punnett square, the possible genotypes of their offspring are IAi and ii. This means there is a 50% chance the child will have blood type A (IAi) and a 50% chance the child will have blood type O (ii).
Tips
It is important to remember that a person with blood type A can have two possible genotypes: homozygous (IAIA) or heterozygous (IAi).
Sources
- If a woman who is heterozygous for blood type A marries a man that ... - homework.study.com
- Textbook & Expert-Verified - brainly.com
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