1. Creating Genetic Variation in Gametes Flashcards
1
Q
Name 2 main events leaving In meiosis leading to genetic variation
A
Crossing over of chromatids
Independent segregation of chromosomes
2
Q
Crossing over also know as?
A
Recombination
3
Q
Crossing over of chromatids
A
Homologous chromosomes come together and pair up.
Chromatids twist around each other and bits of chromatids swap over.
Contain same genes/ different alleles
This means that each of 4 daughter cells formed from meiosis 2 have different alleles - genetically different
4
Q
When does crossing over of chromatids occur
A
Meiosis 1
5
Q
Independent segregation of chromosomes
A
Random division of maternal and paternal chromosomes into daughter cells.
Random process.
Different combinations of maternal and paternal chromosomes.
Genetic variation
