What does H2 represent in genetics?

What does H2 represent in genetics?

• A. Heritability in Broad Sense
• B. Hereditary Transmission Index
• C. Hyperbolic Trait Analysis
• D. Hereditary Measure

Answer: (A)

H2 represents Heritability in Broad Sense in genetics. This concept is fundamental in the study of quantitative traits, as it quantifies the proportion of phenotypic variance in a trait that can be attributed to genetic variance. Heritability in the broad sense takes into account all genetic contributions, including additive, dominance, and interaction effects among alleles. This measure helps researchers understand the extent to which a trait can be influenced by genetic factors versus environmental influences, which is crucial for breeding programs and evolutionary biology. By calculating broad-sense heritability, scientists can make predictions about how traits may be passed on to future generations, thus informing selection strategies in breeding practices.