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11-03-2018
Biology

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The only source of new brand new genetic variation in a species is:

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Abysmal Abysmal

13-03-2018

The three sources of genetic variability in a sexually reproducing organism are: Independent assortment of homologous chromosomes during meiosis I and ofnonidentical sister chromatids during meiosis II. Crossing over between homologous chromosomes during prophase I. Random fertilization of an ovum by a sperm.

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