Back to category: Science Limited version - please login or register to view the entire paper. HOW REPRODUCTIVE CELLS ARE PRODUCED FUNCTION OF MEIOSIS - Reproduction involved union of two cells to form a zygote. - Contains chromosomes from both parents. Meiosis: Special type of cell division of cell division that occurs only in reproductive organs. - Produces reproductive cells called gametes. - Gametes (sperm or egg) are haploids (contain only one copy of each type of chromosome that diploid parent cell contains). · Haploid – 23 chromosomes · Diploid – 46 chromosomes (23 pairs) - First part of meiosis reduces chromosome number from diploid to haploid (called reduction division). - Each human sperm or egg cell contains 22 autosomes and one sex chromosome (either X or Y chromosome). - Autosomes are chromosomes that are not directly involved in determining the sec of an individual. · Females – XX · Males – XY PHASES OF MEIOSIS - Involves sequence of phases that is similar to mitosis: prophase, metaphase, anaphase, telophase. - ... Posted by: Ryan Wilkins Limited version - please login or register to view the entire paper. |
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