NEET 2026
- Exam
- NEET
- Year
- 2026
- Subject
- Biology
- Chapter
- Chapter
NEET 2026 · Biology · Chapter
During a blood typing test, a man's blood sample shows...
During a blood typing test, a man's blood sample shows agglutination with both anti-A and anti-B sera. He marries a woman whose blood shows no agglutination with either sera. Which of the following represents the possible genotypes of their biological children?
A.
B.
C.
D.
E.
Choose the most appropriate answer from the options given below :
A.
B.
C.
D.
E.
Choose the most appropriate answer from the options given below :
Options
- AA and B only
- BA, B and C only
- CC and D only
- DB, D and E only
Correct answer
A. A and B only
Step-by-step solution
The man's blood shows agglutination with both anti-A and anti-B sera, indicating the presence of both A and B antigens. His blood group is AB, and his genotype is .
The woman's blood shows no agglutination with either sera, indicating the absence of both A and B antigens. Her blood group is O, and her genotype is .
A cross between the man () and the woman () produces gametes and from the man, and from the woman.
The possible genotypes of their biological children are and .
Thus, only genotypes A and B are possible.
Answer: A and B only
The woman's blood shows no agglutination with either sera, indicating the absence of both A and B antigens. Her blood group is O, and her genotype is .
A cross between the man () and the woman () produces gametes and from the man, and from the woman.
The possible genotypes of their biological children are and .
Thus, only genotypes A and B are possible.
Answer: A and B only