Cell Division Flashcards
Genome
All the DNA in a cell
Chromosomes
separate DNA molecules that make up the entire genome
Homologous Chromsome pairs
two different versions of the same chromosome number
-one from mother and one from father
Sister chromatids
identical, attached copies of a single chromosome
-forming dyads
dyads
replicated chromosomes containing two sister chromatids that look like an X
Kinetochores
proteins on the side of centromeres that help microtubules pull sister chromatids apart during cell division
Karyokinesis
division of the nucleus
Cytokinesis
physical division of the cytoplasm and cell membrane
Parent cell
one parent cell produces two daughter cells after division
Ploidy
describes the number of chromosome sets found in the body
-humans are diploid because they contain two sets of chromosomes
Sex chromosomes
one pair in the human body and determine sex
autosomes
22 pairs int he human body and are nonsex chromosomes
Gametes
haploid cells (sperm and eggs)
Germ cells
diploid cells that divide by meiosis to produce gametes
Gametocyte
eukaryotic germ cells that can either divide to form gametocytes or produce gametes