The stages of meiosis I + II

What occurs in the G1 and G2 phases before meiosis?

G1 and G2 phases are part of the cell cycle that occur only once before meiosis, where the cell grows (G

What happens during Meiosis 1?

During Meiosis 1, homologous chromosomes are separated into two daughter cells, resulting in haploid cells. This division is crucial for increasing genetic diversity.

what happens in meiosis 2

separates sister chromatids—results in 4 genetically unique haploid genes

What occurs in prophase I

chromatin condenses (tightly packed), spindle fibers form, nuclear membrane breaks down

what is crossing over ?

the exchange of genetic information between homologus chromosomes that results in shuffled chromosomes- results in genetic diversity

what is chiasmata?

the point where paired chromosomes cross over and exchange genetic information between non-sister chromatids

metaphase I

homologus pairs line up at the metaphase plate

what happens in anaphase I

Tetrads split; homologus chromosome move to opposite poles

what occurs in telophase and cytokinesis

spindle fibers disappear, nuclear membrane reforms, cytoplasm divides the cell into 2 daughter cells

what happens in prophase II

nuclear membrane breaks down, spindle fibers form.

what happens in metaphase II

sister chromatids align in a single file on metaphase plate

anaphase II

sister chromatids completely separate and move to opposite ends of the cell

what occurs in telophase + cytokinesis

nuclear membrane reforms, cytokinesis divides daughter cells into 4 total cells