Mitosis and Meiosis are parts of the cell cycle
Mitosis:
in somatic cells (body cells)
Replicates DNA once, divides once
results in two identical daughter cells
DNA is doubled once, divided twice
Diploid (full set of chromosomes)
Meiosis:
in gametes (sex cells)
Replicates DNA once, divides twice
Parent cells are diploid, daughter cells are haploid
Results in haploid cells (half set of DNA)
one chromosome from each homologous pair
Meiosis 1: sister chromatids stay connected and homologous pairs seperate
Meisos 2: sister chromatids seperate
Crossing Over
stage in Meiosis
occurs after DNA doubles during S phase of Interphase
occurs only in Prophase 1
phsically swaps genes that code for the same trait/protein but may be different versions/alleles
new combinations of alleles
does not create new genes or chromosomes or rearrange the sequence
Knowt
