Sexes vedio

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The gametes produced by an organism are determined by its sex: males produce male gametes (spermatozoa, or sperm, in animals; pollen in plants) while females produce female gametes (ova, or egg cells); individual organisms which produce both male and female gametes are termed hermaphroditic.Frequently, physical differences are associated with the different sexes of an organism; these sexual dimorphisms can reflect the different reproductive pressures the sexes experience.Some bacteria use conjugation to transfer genetic material between cells; while not the same as sexual reproduction, this also results in the mixture of genetic traits.The defining characteristic of sexual reproduction in eukaryotes is the difference between the gametes and the binary nature of fertilization.As sexual reproduction developed by way of a long process of evolution, intermediates exist.Bacteria, for instance, reproduce asexually, but undergo a process by which a part of the genetic material of an individual (donor) is transferred to an other (recipient).Among humans and other mammals, males typically carry XY chromosomes, whereas females typically carry XX chromosomes, which are a part of the XY sex-determination system.

Conversely, there are also species in which there is no sexual specialization, and the same individuals both contain masculine and feminine reproductive organs, and they are called hermaphrodites. The reason for the evolution of sex, and the reason(s) it has survived to the present, are still matters of debate.The resulting cells are called gametes, and contain only half the genetic material of the parent cells.These gametes are the cells that are prepared for the sexual reproduction of the organism.troisième sexe, referring to masculine women in 1817 and homosexuals in 1847.First used by Lord Byron and others in English in reference to Catholic clergy. sex (countable and uncountable, plural sexes) The translations below need to be checked and inserted above into the appropriate translation tables, removing any numbers.

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