Final answer:
Heritability is a measure of the proportion of the total variation in a population that can be attributed to genetics. The option (A) is correct.
Step-by-step explanation:
Heritability is the fraction of phenotype variation that can be attributed to genetic differences among individuals in a population. It measures the proportion of the total variation observed in a population that is due to genetics, rather than the environment. The heritability index is used to quantify this measure.
For example, if a trait has a heritability index of 0.8, it means that 80% of the variation in that trait can be attributed to genetics. Therefore, option (A) is correct.
This question is not complete, Here I am attaching the complete question:
__________ is a measure of the proportion of the total variation observed in a population that can be attributed to genetics, rather than the environment.
A. Heritability Index
B. Genetic Quotient
C. Environmental Variation Ratio
D. Genome Proportion