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Meiosis Vocab Words

TermDefinition
gamete reproductive cells. ex: sperm&egg
haploid a cell that contain a single set of chromosomes. the haploid cell contains 23 chromosomes.
oogenesis the production of egg cells
ovum/ova an egg cell, female reproductive cell
sperm male reproductive cell
zygote a fertilized egg
tetrad a four-part structure that forms during the prophase of meiosis and consists of two homologous chromosomes, each composed of two sister chromatids.
synapsis the pairing of two homologous chromosomes that occurs during meiosis.
fertilization a process in sexual reproduction that involves the union of the sperm and egg cells. this process restores the diploid number
disjunction when homologous chromosomes move apart toward the opposite poles of the cell in anaphase I.
gametogenesis the production of reproductive cells
homologous chromosome The chromosomes of may be divided into two sets: one that is derived from the mother and the other from the father.
crossing over the exchange of genetic material between non-sister chromatids of homologous chromosomes
gonads the reproductive organs. ex: ovaries and testes
spermatogenesis the production of sperm cells
polar bodies each of the small cells which bud off from an oocyte at the two meiotic divisions and do not develop into ova.
meiosis cell division that produces reproductive cells in sexually reproducing organisms
variation any difference between cells, individual organisms, or groups of organisms of any species caused either by genetic differences
nondisjunction failure of a pair of homologous chromosomes to separate
Created by: 1002281