Slide 1 Gastrulation  The goal is to form three GERM LAYERS (starting from a hollow ball of cells) Ectoderm: Outside skin, nerves Mesoderm: Blood, Muscle, some organs…

Slide 1 Genomic Circuits Slide 2 Are Genes Hardwired? No, gene expression can be modified Cis-regulatory elements are modular; offering sites for protein binding in repression…

Slide 1 Slide 2 Fig. 19-1 Simplified drawing of a cross-section through part of the wall of the intestine. Each tissue is an organized assembly of cells held together by…

Slide 1 Formation of blastula Slide 2 Gastrulation Slide 3 Early gastrula ectoderm: blue; dorsal lip of blastopore: green endoderm: yellow; yolk: orange Slide 4 Mid-gastrula…

Slide 1 Integumentary System Chapter 6 The Skin, etc. Test is Oct. 8 th !!!! Note Cards Due September 29 th !!! Slide 2 Integumentary System Consists of… –Skin –Sweat…