Centromeres were first defined as genetic loci that direct the behaviour of chromosomes.

The genes A and a that control size in peas are just one of many genetic 'loci' in peas.

In general, however, epistasis denotes any departure from independence of the effects of different genetic loci.

These findings suggest that there are many genetic loci, each with small effects on blood pressure in the general population.

The expression of a phenotype may be modified by the effects of aging, other genetic loci, or environmental factors.

There are a number of possible genetic loci for this disorder, though no causative genes have been demonstrated.

Studies of linked traits led to the first maps of genetic loci on chromosomes.

Thus, there are at least 32 identified genetic loci required for viability or fertility in the centric heterochromatin.

Six genetic loci found by linkage are known and listed below.

However, in general epistasis is used to denote the departure from 'independence' of the effects of different genetic loci.