ANTH 1001 Chapter : Anthro 1 27
Document Summary
Centromere-constricted portion of a chromosome that holds together, temporarily, two chromatids. Metaphase-chromosomes (homologs and non-homologs) align independently from one another. Results: two cells produce; each cell has the diploid chromosome number, both daughter cells are genetically identical to the parent cell and to one another. Ultimate function of mitosis-the production of genetically identical cells. 2) function- produce sex cells to transmit genetic material to offspring. Crossing over- (recombination)- physical exchange of genetic material between homologous chromosomes. Prophase i homologous chromosome synapse, and crossing-over between. Metaphase i-homologous chromosomes remain paired; nonhomologous chromosomes align independently from one another. Results of meiosis: 4 cells are produced; each cell has the haploid chromosome number. Haploid-one half of chromosome number: each daughter cell is genetically different from the parent cell and from one another. Genetic stricture of daughter cell compared to parent cell and other daughter cells.
