position effect

American  

noun

Genetics.

1. the alteration in the expression of a gene or genetic region due to its relocation within the genome as a result of inversion or translocation.

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position effect British  

noun

1. the effect on the phenotype of interacting genes when their relative positions on the chromosome are altered, as by inversion

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Etymology

Origin of position effect

First recorded in 1925–30

Example Sentences

The recency effect, part of the serial position effect, is the notion that the thing people remember best is the last thing on a list.

From Time

This is what psychology calls the serial position effect.

From Forbes