Chromosome Mutations Flashcards
1
Q
Describe non disjunction
A
- Chromosomes or chromatids do not split equally during anaphase
- gametes will not have correct number o chromosomes
2
Q
2 form of non disjunction in chromosomes
A
Polyploidy and aneuploidy
3
Q
Describe polyploidy
A
Change to a whole set of chromosomes
4
Q
When does polyploidy occur
A
When organisms have 3 or moe sets of chromosomes
5
Q
Why do polyploidy occur manly in plants
A
To increase crop yields
6
Q
Describe aneuploidy
A
Changes the number of chromosomes
- individual chromosomes fail to separate during meiosis
- 2 more or 1 fewer chromosomes
