Is gene duplication mean evolution or not?

1.	Is gene duplication mean evolution or not?
Answer» Explanation: Gene duplication has long been recognized as a potential source of EVOLUTIONARY NOVELTY (Ohno, 1970). ... When this subfunctionalization or neofunctionalization occurs, the same evolutionary mechanisms that would apply to any single gene also occur. PROTEIN sequence might change; REGULATORY sequences might be ALTERED.

Answer»

Explanation:

Gene duplication has long been recognized as a potential source of EVOLUTIONARY NOVELTY (Ohno, 1970). ... When this subfunctionalization or neofunctionalization occurs, the same evolutionary mechanisms that would apply to any single gene also occur. PROTEIN sequence might change; REGULATORY sequences might be ALTERED.

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Is gene duplication mean evolution or not?

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