BIOL 131 Lecture Notes - Lecture 7: Miscarriage, Phenylalanine, Heritability
Document Summary
Heritability the extent to which variations in a given characteristic (like fur color or size or number of toes) between individuals in a designated group are associated with differences in the genotypes (genetic makeup) of those individuals. Heritability and heritable traits refer to characteristics where variations in that characteristic are associated with differences in the genetic makeup between individuals in a population. For example: if tail length is heritable, that means that variations in tail length (long, medium, short) are due mostly to differences in the genotypes (ll, ll, ll) of individuals in a population. If fur color is not heritable, that means that variations in fur color (black, gray, white) are due completely to influences environmental variables (like temperature, light, nutrients, toxins, etc. ) had on the individuals in that population. It is possible for an offspring to have a heritable variation, but not look like its parents even if no mutations have occurred.