Bob has XXY chromosomes (Klinefelter syndrome) and is color blind. His mother and father have normal color vision, but his maternal grandfather is color blind. Assume that Bob's chromosome abnormality arose from nondisjunction in meiosis. In which parent and in which meiotic division did nondisjunction take place? Assume no crossing over has taken place. Explain your answer. | Numerade

tyyy

yYy

yayyy

Klinefelter and XYY Syndrome: Types of Sex Chromosome Aneuploidy - Video | Study.com