Lecture 10 (deleted 4f50fba2-1dcdc3-ad76d0c5)

The phenotypic variance vp can be appor7oned into

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: rent types of quan7ta7ve traits Con7nuous traits, meris7c traits, and threshold traits Type 1: Con/nuous trait A con7nuous trait can theore7cally assume any value between two extremes. 30 15 2/23/12 Different types of quan7ta7ve traits Con7nuous traits, meris7c traits, and threshold traits Type 2: Meris/c trait Number of tail vertebrae in mice A meris7c trait is measured in whole numbers (and has a limited number of dis7nct phenotypes) but its underlying basis is s7ll likely to be quan7ta7ve (polygenic). 31 Different types of quan7ta7ve traits Con7nuous traits, meris7c traits, and threshold traits Type 3: Threshold trait A threshold trait is simply present or absent (e.g., a disease) but controlled by mul7ple gene7c and environmental factors. The expression of the trait depends on the underlying suscep7bility with varies con7nuously. 32 16 2/23/12 Heritability: meas...
View Full Document

This note was uploaded on 01/30/2013 for the course BIO LS1B taught by Professor Andrewberry,hopihoekstra,maryellenruvolo during the Spring '12 term at Harvard.

Ask a homework question - tutors are online