BIOL3044 Lecture Notes - Lecture 1: Heritability, Phenotype, Quantitative Genetics
Document Summary
How offspring tends to share alleles, and makes them phenotypically similar to each other (ex. both tall, both short, both have large wingspans, etc) Correlation between parents and offspring: what is it about alleles that are inherited by offspring that make them similar to parents. Response to selection (why there is a continuation of selection) After selected individuals produced seeds, the average of the offspring population was measured: response to selection (r): difference between the offspring population average and parent population average. Hn = r/s: hn = 0. 71, heritability is 0. 71. Offspring resemble parents: offspring of large parents tend to be large, and offspring of small parents tend to be small. How closely offspring resemble parents is the heritability: high heritability close resemblance, low heritability weak resemblance. Phenotype (deviation from the average) can be broken down into genotypic effect and environmental effect.
