ANSC 3121 Chapter Notes - Chapter 5: Rachel Dawes, Product Rule, Gene
Document Summary
Chapter 5: the inheritance of single-gene traits (from genetics genes, genomes, and evolution by philip meneely, rachel dawes hoang, iruka n. okeke, and katherine heston; oxford) We will explore the mechanism of gene expression in more detail. Genes are located at defined position on chromosomes, each position is often called a locus, so the term gene and locus are frequently used interchangeably. Mendel worked with garden peas, and his first important scientific breakthrough was to use true-breeding varieties. An organism is said to be true-breeding for a trait if it will pass that trait to all offspring of all subsequent generations when crossed to an organism that is true-breeding for the same trait. For complex traits, the inheritance of each individual gene behaves like a simple mendelian unit, following the laws of inheritance. However, the phenotype might not exhibit a simple mendelian character because it is determined by the action of several genes working together.
