meiosis Flashcards
Meiosis
When gamete (sperm or egg)
cells reproduce themselves
What happens during meiosis
a single diploid cell
divides and produces FOUR haploid reproductive cells.
what happens in meiosis
Meiosis there is one chromosome
duplication followed by two cellular
divisions (into four cells) so Meiosis is
broken down into Meiosis I and Meiosis II.
Bruh we in a mchicken
๐ญ ๐ญ ๐ญ ๐ญ
How many sources of genetic recombination are there
2
what are the 2 sources of genetic recombination
! Crossing over
@ Independant assortment
what is crossing over
Non-sister chromatids of a chromosome pair exchange
their genetic material.
Independent assortment.
Homologous chromosomes are distributed to
daughter cells randomly.
Compare Meiosis 1 and Mitosis
Meiosis I:
โ Prophase I - pairing of
homologous
chromosomes
โ Metaphase I โ
homologous pairs line up
at metaphase plate
โ Anaphase I โ homologous
chromosomes separate
โ Telophase I โ daughter
cells are haploid
โ Mitosis:
โ Prophase has no such
pairing
โ Metaphase โ
chromosomes align at
metaphase plate
โ Anaphase โ sister
chromatids separate
โ Telophase โ diploid cells