MITOSIS, CYTOKINESIS, MEIOSIS AND APOPTOSIS Michelle Gehringer Department of Biochemistry and Microbiology, University of Port Elizabeth, South Africa Keywords: Cell cycle, checkpoints, growth factors, mitosis, meiosis, cyclin, cyclin dependent protein kinases, G1 phase, S phase, spindle, prophase, anaphase, metaphase,
Summary: At the end of meiosis, 4 daughter cells are formed = eggs or sperm. Each contains half as many chromosomes as the parent cell (n); each cell is genetically different from its parents and from its siblings. Fertilization of an egg by a sperm restores the chromosome number to 2n.
11. Which letters in figure #1 represents the formation of a human male zygote?  / + 46+XX qÃ 12. During meiosis, the chromosome number: Figure #1 a) is doubled b) is reduce c) remains the same d) becomes diploid 13. Meiosis produces haploid (#) reproductive cells called 14. Name the 2 human ga etes & tell their chromosome number. 15.