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biology
G1 phase | cell growth happens here |
s phase | dna is replicated |
G1, S, G2 | interphase |
G2 phase | preparation for mitosis |
checkpoint | checks for damage. ensures cells are healthy if the cell is damaged apoptosis occurs. apoptosis failure leads to tumors and tumors mean cancer. |
nondisjunction | the failure of homologous chromosomes or sister chromatids to separate properly during cell division |
diploids | a cell that has paired chromosomes , one from each parent. ONLY SOMATIC CELLS not sex/germ cells. (46 chromosomes) |
haploid (half of what they should be) | germ cells (gametes) (egg and sperm cells ) only 23 chromosomes . |
homologous chromosomes | chromosome pairs , one from each parent , that are similar in length , gene position and centromere position.(sister chromatids) |
cell differentiations | the process when a cell develops into a specific type of cell by dna |
somatic cells (used for growth repair) | any cell forming the body of an organism ; except for sex cells. |
germ cells |