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atavism

atavism (ăt´əvizəm), the appearance in an individual of a characteristic not apparent in the preceding generation. At one time it was believed that such a phenomenon was thought to be a reversion of "throwback" to a hypothetical ancestral prototype. The term is seldom used today since science has shown that such abnormal characteristics can be explained by the inheritance of a pair of recessive genes. See Mendel.

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atavism

atavism The reappearance of a character after several generations, the character being the expression of a recessive gene or of complementary genes. The character, or the individual possessing this character, is sometimes referred to as a ‘throw-back’.

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atavism

atavism The reappearance of a character after several generations, the character being the expression of a recessive gene or of complementary genes. The character, or individual possessing this character, is sometimes referred to as a ‘throw-back’.

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atavism

atavism The reappearance of a character after several generations, the character being the expression of a recessive gene or of complementary genes. The character, or individual possessing this character, is sometimes referred to as a ‘throw-back’.

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atavism

atavism resemblance to remote ancestors rather than parents. XIX. — F. atavisme, f. L. atavus great-grandfather's grandfather, f. avus grandfather; see -ISM.
Hence atavistic XIX.

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atavism

atavism (at-ă-vizm) n. the phenomenon in which an individual has a character or disease known to have occurred in a remote ancestor but not in his parents.

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