bicd 100 - lecture 11

bicd 100 - lecture 11 - LECTURE 16 1 2 3 4 Sex-linked...

Info icon This preview shows pages 1–10. Sign up to view the full content.

View Full Document Right Arrow Icon
LECTURE - 16 1. Sex-linked Characteristics 2. Penetrance and Expressivity 3. Sex-influenced Characteristics 4. Sex-limited Characteristics
Image of page 1

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

View Full Document Right Arrow Icon
Sex Determination XX-XO: grasshoppers XX-XY: humans ZW-ZZ: birds, fish Haplodiploidy: (no sex chromosomes) bees, wasps, ants Environmental: slipper limpets Genic balance: Drosophila
Image of page 2
Image of page 3

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

View Full Document Right Arrow Icon
Image of page 4
Dosage Compensation
Image of page 5

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

View Full Document Right Arrow Icon
X inactivation in Female Mammals In mammalian females, one of the two X chromosomes in each cell is randomly inactivated during embryonic development If a female is heterozygous for a particular gene located on the X chromosome, she will be a mosaic for that character
Image of page 6