meiosis Flashcards
1
Q
what is crossing over
A
the exchange of segments of chromosomes in a homologous pair at the chiasma
2
Q
what is independent assortment?
A
line up randomly
3
Q
what is non disjunction?
A
when the chromosomes don’t split correctly
4
Q
when does non disjunction occur?
A
anaphase 1 or 2
5
Q
what does non disjunction produce?
A
aneuploidy
6
Q
what is epigenetics?
A
the environment’s effect on phenotypes by turning a gene on/off
7
Q
what is polygenetic inheritance?
A
when a phenotype is controlled by more then two gene
8
Q
what is a continuous trait?
A
height, weight
9
Q
what is a discontinuous trait?
A
only a few combinations - eye colour, sex
10
Q
what cells undergo meiosis?
A
germ cells
