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Gamete | biology |

More Definitions for gamete. See the full definition for gamete in the English Language Learners Dictionary. Words that rhyme with gamete. Encyclopedia article about gamete. What made you want to look up gamete? Please tell us where you read or heard it including the quote, if possible. Test Your Knowledge - and learn some interesting things along the way.

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Introduction to cell division

Learn More in these related Britannica articles: The reproductive cells gametes are an exception; they have only half as many chromosomes as the body somatic cells. But the number, size, and organization of chromosomes varies between species. The parasitic nematode Parascaris univalens has only one pair of chromosomes, whereas many species of butterflies have more….

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Each gamete contributes one set of chromosomes and therefore one copy allele of each gene to the resultant offspring. If a gene bearing a mutation is passed on, it may cause a…. Meiosis involves the division of a 2 n sporocyte meiocyte, spore mother cell, pollen mother cell to produce four 1 n spores.

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These four spores constitute a tetrad. Gamete s are 1 n cells that fuse…. The male gamete, or sex cell, also has 44 autosomes and two X, Y sex chromosomes. As a result of a reducing division occurring before fertilization, it, too, has 23 chromosomes, including either an X or a Y sex chromosome at the time that it merges with….

La formation des gamètes

More About Gamete 23 references found in Britannica articles Assorted References role of recombination In recombination zygotes In zygote development in algae In algae: Human physiology of sexual reproduction. Menarche Menstruation Follicular phase Ovulation Luteal phase. Spermatogenesis spermatogonium spermatocyte spermatid sperm Oogenesis oogonium oocyte ootid ovum Germ cell gonocyte gamete. Ovum Oviposition Oviparity Ovoviviparity Vivipary.

Hypothalamic—pituitary—gonadal axis Hypothalamic—pituitary—prolactin axis Andrology Hormone. Thelarche Development Lactation Breastfeeding. Retrieved from " https: Classical genetics Germ cells Reproductive system. Use dmy dates from November Views Read Edit View history.

Fertilization terminology: gametes, zygotes, haploid, diploid

This page was last edited on 16 December , at By using this site, you agree to the Terms of Use and Privacy Policy. Part of a series on. Evolution of sexual reproduction Anisogamy Isogamy Germ cell Meiosis Gametogenesis Spermatogenesis Oogenesis Gamete spermatozoon ovum Fertilization External fertilization Internal fertilization Sexual selection Plant reproduction Fungal reproduction Sexual reproduction in animals Sexual intercourse Copulation Human reproduction.

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