meiosis Flashcards
meiosis
cell division, which creates four daughter cells
haploid
cell containing one copy of each chromosome
diploid
cell containing two copies of each chromosome, maternal + paternal
haploid cells in human body
gametes, created through meiosis
gametes function
used in sexual reproduction, where gametes will fuse in a process called fertilization to create a zygote
meiosis function
allows creation of gametes, and therefore allows sexual reproduction
step 0 of meiosis: before cell division starts
parent cell replicates DNA
step 1 of meiosis
nuclear membrane breaks down and homologous chromosomes line up at equator of cell next to each other
step 2 of meiosis
fibres pull the chromosomes away from each other and to the poles of the cell
step 3 of meiosis
fibres pull the chromosomes away from each other and to the poles of the cell
step 4 of meiosis
cell membrane pinches apart the daughter cells
step 5 of meiosis
nuclear membrane breaks down and chromosomes move to center of cell
step 6 of meiosis
sister chromatids are pulled to poles of cell by fibres and separated
step 7 of meiosis
cell membrane pinches apart daughter cells
parent cells and daughter cells
parent cell carries different genetic information to daughter cells