founder effect
noun
: the effect on the resulting gene pool that occurs when a new isolated population is founded by a small number of individuals possessing limited genetic variation relative to the larger population from which they have migrated
Example Sentences
Recent Examples on the Web That could be a founder effect, in which the initial group included fewer fertile males than females. 
Ann Gibbons, Science | AAAS, 16 June 2021
Ann Gibbons, Science | AAAS, 16 June 2021 Word History
First Known Use
1970, in the meaning defined above
- maneuverability
- maneuverable
- maneuvered
- maneuvered (around)
- maneuvered around
- maneuverer
- maneuverers
- maneuvering
- maneuvering (around)
- maneuvering around
- maneuvering board
- maneuvers
- maneuvers (around)
- maneuvers around
- manf
- manfish
- manfreda
- manful
- manfuler
- manfulest
- manfuller
- manfullest
- manfullier
- manfulliest
- manfully