Study Guide 7.5 Flashcards
1
Q
what happens when disjunction occurs during meiosis 1
A
homologous chromosomes don’t separate
2
Q
what happens when disjunction occurs during meiosis 2
A
sister chromatids don’t separate
3
Q
deletion
A
missing genes
4
Q
duplication
A
extra genes
5
Q
inversion
A
order of genes is reversed
6
Q
translocation
A
swaps with another chromosome
7
Q
what determines sex at birth
A
x or y chromosomes
8
Q
what happens with two x chromosomes
A
one is inactivated
9
Q
what happens with three x chromosomes
A
two are inactivated
10
Q
A
