Bad cell division Flashcards
1
Q
What is Nondisjunction
A
Failure of chromosomes or chromatids to seperate normally during meiosis
2
Q
How can nondisjunction happen in meiosis 1?
A
both members of homologous pair go to one pole
3
Q
How can nondisjunction occur during meiosis 2?
A
both sister chromatids go to one pole
4
Q
What happens when fertilization occurs after nondisjunction
A
zygotes with altered number of chromosomes
5
Q
What is trisomy
A
inheritance of three copies of a chromosome
