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| the ability of a population to maintain or increase its numbers in succeeding generations |
| a sudden departure from the parent type an heritable characteristic caused by a change in a gene or a chromosome |
gemmation gem·ma·tion (jě-mā'shən)
n.
A form of fission in which the parent cell does not divide, but forms a bud-like cell that separates and begins an independent existence. Also called budding, bud fission.