Biology: Sexual Reproduction and Role of Meiosis

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There are two types of reproduction, asexual reproduction and sexual reproduction. Asexual reproduction creates genetically identical offspring. Several types of asexual reproduction are binary fission, which occurs in bacteria, budding, which occurs in coral, and spores, which some plants produce.

However, sexual reproduction is selected for, genetically. This is because sexual reproduction produces new genetic combinations in offspring that allow for more variety and competition. These genetic combinations are known as recombinant genes. However, sexual reproduction requires a reductive cell division, called meiosis, to produce gametes. Gametes are haploid sex cells, instead of the normal diploid somatic cells and are necessary to keep the correct number of chromosomes in DNA.

Taught by Professor George Wolfe, this lesson was selected from a broader, comprehensive course, Biology.

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[TheSweetdancer2]

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