Lab 05 - Heritability and quantitative traits

In today's lab we focused in calculating heritability, the proportion of phenotypic variance explained by genetic differences.

We covered two approaches to calculating heritability:

1. Broad sense heritability: It reflects all possible genetic contributions to a population's phenotypic variance like effects due to allelic variation (additive variance), dominance/recessiveness, polygenic interactions, and well as maternal and paternal effects.
2. Narrow sense heritability: It quantifies only the proportion of phenotypic variation explained by additive contribution of the genes that control the trait, ignoring all other genetic contributions.

We calculated broad sense heritability with data collected from student's fingerprints, specifically total ridge count. And narrow sense heritability was calculated based on students' heights in inches, as well as the heights of their siblings, parents, and parents siblings.

----------------------