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Sex


In clownfish, smaller fish are male, and the dominant and largest fish in a group becomes female.
Multiplicity of gamete types within a species would still be considered a form of sexual reproduction.
Many plants have flowers and these are the sexual organs of those plants.
For other uses, see, sex (disambiguation).Traumatic insemination, for example, is used by some insect species to inseminate females through a wound in the abdominal cavitya process detrimental to the female's health.31 Within seed plants, male gametes are contained within hard coats, forming pollen.Kaiser VB, Bachtrog D (2010).The resulting cells are called gametes, and contain only half the genetic material of the parent cells.Diploid organisms can, in turn, form haploid cells ( gametes ) that randomly contain one of each of the chromosome pairs, via meiosis.49 In birds, males often have a more colourful appearance and may have features (like the long tail of male peacocks) that would seem to put the organism at a disadvantage (e.g.8 of the Most Expensive Sex Toys Money Can Buy.50 This hypothesis says that, by demonstrating he can survive with such handicaps, the male is advertising his genetic fitness to femalestraits that will benefit daughters as well, who candidly dating sex talk woman will not be encumbered with such handicaps.Molecular Cell Biology (Fourth.).The alleles a/A and b/B occur at random."Population ecology, population genetics, and microevolution".However, no third gamete type is known in multicellular plants or animals.Animals are usually mobile and seek out a partner of the opposite sex for mating.The biological cause for an organism developing into one sex or the other is called sex determination."Comparative Anatomy and Morphology of the Hepaticae".Feedback is important in the during sex.
In many organisms, the haploid stage has been reduced to just gametes specialized to recombine and form a new diploid organism; in others, such as cryptogamic plants the gametes are capable of undergoing cell division to produce multicellular haploid organisms.
The handicap principle: a missing piece of Darwin's puzzle.



Exceptions are commonfor example, the roundworm.
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