BIS 101 Notes 1-24-11

BIS 101 Notes 1-24-11 - BIS 101 1/24/11 Lecture 6 Chapter...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
BIS 101 1/24/11 Lecture 6 Chapter 3, 6 I. a. Traits that are controlled by multiple genes i. Each having more or less an equal influence on the phenotypic variation b. Ex, bean weight, color of wheat kernel, cow milk production, usually quantitative value i. Can breed for a certain quantitative value c. They contribute in “doses,” they aren’t really dominant or recessive. i. Ex, dihybrid organism R1R2T1T1 color of wheat kernel 1. Each “2” adds a unit of color 2. Each “1” adds no color ii. Results with a Bell-shaped histogram 1. 1/16, 4/16, 6/16, 4/16, 1/16 for each phenotype d. Trihybrid would result in 6 different phenotypes, 1-6-15-20-15-6-1 (out of 64) II. Cytoplasmic Inheritance a. Eggs contribute the cytoplasm, so males don’t really contribute much of anything i. Traits are transmitted by the mother, matrilineal inheritance b. Chloroplast DNA or Mitochondria DNA i. Found in membrane bound organelles
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 2

BIS 101 Notes 1-24-11 - BIS 101 1/24/11 Lecture 6 Chapter...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online