meiosis Flashcards
1
Q
what is meiosis
A
special types of cell division where a cell divides twice to make four haploid cells - gametes
2
Q
what cell does meiosis start with
A
germline cells that are diploid
3
Q
what in meiosis increases genetic variability
A
crossing over and independant assortment
4
Q
what is crossing over
A
when non-sister homologous chromosomes cross over which results in the formation of new recombinant chromotids each with its own unique combination of alleles
5
Q
when does crossing over happen
A
meiosis one - prophase 1
6
Q
what is independent assortment
A
when homologous chromosomes line up on opposite sides of the metaphase plate. the arrangement of the maternal and paternal chromosomes are randomised
7
Q
when does independant assortment occur
A
metaphase 1
