Biology Definitions Meiosis

Meiosis

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Meiosis
A form of cell division that occurs in sexually reproducing eukaryotes. While two forms of nuclear division occur (meiosis I and meiosis II), it produces four haploid gametes (sex cells) that contain randomly distributed
Haploid
Haploid (n) the number of chromosomes in a gamete of an organism. Or a cell or organism having half the number of chromosomes in somatic cells
Egg
Female gamete, or sex cell in the process of meiosis
Sperm
To the male gamete used to fertilize the female egg in order for meiosis to occur
Oogenesis
Is the production of the Egg or Ovum
Homologous Chromosomes
Are one of a pair of chromosomes, or a chromosome that contains the same gene sequence as another
Fertilization
To when the male and female gametes meet to produce a diploid zygote
Zygote
To the cell that is the result of fertilization
Diploid
To a cell or organism that consisting of two sets of chromosomes, marked by "2n"
Spermatogenesis
Is the process that occurs inside of the male gonad where male haploid, spermatozoa, are formed
Gametogenesis
Is the process leading to the production of gametes
Tetrads
Are a group of four closely associated chromatids of a homologous pair formed by synapsis
Crossing over
Occurrs during prophase of meiosis where two chromosomes line up and exchange genetic material