Answer:
Variation
Step-by-step explanation:
There is a difference in traits that can exist among the individuals of a given population due to either the influence of the environmental factors that causes their genes to express differentially or due to the inherent genetic differences and such differences are known as variations.
If the variation occurs due to the difference in genetic makeup then it is called as genotypic variation and if it occurs due to the environmental influence then it is called as an environmental variation.