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Benefits of cross-fertilization::Fertilisation

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Benefits of cross-fertilization {{#invoke:main|main}} The major benefit of cross-fertilisation is generally regarded to be the avoidance of inbreeding depression. Charles Darwin, in his 1876 book “The Effects of Cross and Self Fertilization in the Vegetable Kingdom” (pages 466-467) summed up his findings in the following way.<ref>Darwin CR (1876). The effects of cross and self fertilisation in the vegetable kingdom. London: John Murray. http://darwin-online.org.uk/converted/published/1881-Worms-CrossandSelfFertilisation-F1249/1876-F1249.html see page 466-467</ref>

“It has been shown in the present volume that the offspring from the union of two distinct individuals, especially if their progenitors have been subjected to very different conditions, have an immense advantage in height, weight, constitutional vigour and fertility over the self-fertilised offspring from one of the same parents. And this fact is amply sufficient to account for the development of the sexual elements, that is, for the genesis of the two sexes.”

In addition, it is thought by some,<ref>{{#invoke:Citation/CS1|citation |CitationClass=journal }}</ref> that a long-term advantage of out-crossing in nature is increased genetic variability that promotes adaptation and/or avoidance of extinction (see Genetic variability).


Fertilisation sections
Intro  History  Fertilization in plants   Fertilisation in animals   Fertilization in fungi  Fertilization in protists   Fertilisation and genetic recombination   Parthenogenesis  Allogamy and autogamy  Other variants of bisexual reproduction  Benefits of cross-fertilization  See also  References  External links  

Benefits of cross-fertilization
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