2011 Slide Set IV Spr11

2011 Slide Set IV Spr11 - SLIDE SET IV Developments Genetic...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
SLIDE SET IV Development’s Genetic “Toolkit”: I. Developmental Genes A. Maternal-effect genes B. Segmentation genes C. Homeotic ( Hox ) genes II. Developmental Genes and Evolution of Body Forms (“Evo-Devo”) A. Role of Hox gene mutations on morphology B. Role of heterochrony
Background image of page 1

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

View Full DocumentRight Arrow Icon
The developmental-Genetic “TOOLKIT” = specific genes that code for proteins that control embryonic development. These proteins: 1. act as transcription factors (regulating gene expression) 2. are involved in specific cell-signaling pathways 3. act as cell-adhesion molecules 4. act as cell membrane receptors 5. act as morphogens
Background image of page 2
I. Body plan formation is regulated by various developmental genes : A. Maternal effect genes 1. Code for egg cytoplasmic determinants that direct egg polarity & body plan early in development e.g., the bicoid protein, a morphogen, in Drosophila Segmentation genes : sequential expression of these genes guides the development of an embryo’s body plan, providing positional
Background image of page 3

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

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 10

2011 Slide Set IV Spr11 - SLIDE SET IV Developments Genetic...

This preview shows document pages 1 - 4. Sign up to view the full document.

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