| a sudden departure from the parent type an heritable characteristic caused by a change in a gene or a chromosome |
| an organism that is not adapted to prevailing conditions or producing offspring that maintain its contribution of genes to the next generation |
modification mod·i·fi·ca·tion (mŏd'ə-fĭ-kā'shən)
n.
Any of the changes in an organism that are caused by environment or activity and are not genetically transmissable to offspring.
| modification (mŏd'ə-fĭ-kā'shən) Pronunciation Key
A change in an organism that results from external influences and cannot be inherited. |