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meiosis

vocabulary

TermDefinition
Gamete(s); reproductive/sex cells ( eggs and sperm)
Haploid; the number of chromosomes in a sex cell (2n)
Oogenesis; production of eggs.
Ovum/ova; the female reproductive cell ( egg ) .
Sperm; the male reproductive cell.
Zygote; is a fertilize egg.
Tetrad; is a group of four chromatids.
Synapsis; centromere where each chromosome lines up with its homologous pair and become attached.
Fertilization; union of an egg and sperm.
Disjunction; separation of homologous chromosomes.
Gametogenesis production of the gametes
Homologous chromosome; chromosomes that are paired one from each parent, and that are similar in lenght, gene position and centromere location.
Crossing over; process in genetics by which the two chromosomes of a homologous pair exchange equal segments with each other.
Gonads; reproductive organs ( ovaries and testes)
Spermatogenesis; production of sperm
Polar Bodies; small haploid cell that is formed as an egg cell during oogenesis , but it doesn´t have the ability to be fertilized.
Meiosis; reduction division, cell division in diploid cells resulting in Haploid cells.
Variation is the difference between cells.
Nondisjunction; chromosomes don´t divide.
Created by: 1008562