| a group of individuals or species having a common ancestry |
| the compact area of a nerve cell that constitutes the nucleus and surrounding cytoplasm, excluding the axons and dendrites |
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. |