Q. Gamete mother cells of the chromosome 44 + XY suffers from non-disjunction at first meiotic division. Which of the following set of gametes would result?
A) 22 + XX, 22 + XY, and 22, 22
B) 22 + XY, 22 + XY, and 22, 22
C) 22 + X, 22 + Y, and 22 + Y, 22
D) 22 + X, 22 + XY, and 22 + Y, 22 + Y
Explanation
Non-disjunction is the condition in which the separation of chromosome doesn’t take place during cell division. In 44+XY non-disjunction there is non-separation of XY gene is there, which leads to the formation of sperm having genotypes, 22+XY and 22
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.