11.4 – Reproduction 11.4.1 - Annotate a light micrograph of testis tissue to show the location and function of interstitial cell (Leydig cells), germinal epithelium cells,…

Slide 1Morphogen gradient, cascade, signal transduction Maternal effect genes Zygotic genes Syncytial blastoderm Cellular blastoderm Slide 2 Homeotic selector genes Similar…

Slide 1Drosophila melanogaster Genetic studies Microsurgical manipulation One of the best understood developmental systems 13,600 genes Axis determination Signaling pathway…

Model of Drosophila Anterior-Posterior Pattern Formation Maternal effect genes Zygotic genes Syncytial blastoderm Cellular blastoderm Homeotic selector genes Similar signal…

Chap. 8 Membrane Structure and Function A.P.Biology Mr. Orndorff October 2005 Molecular models of membranes Overton (1895): membranes made of lipids because lipid soluble…

Morphogen gradient, cascade, signal transduction Maternal effect genes Zygotic genes Syncytial blastoderm Cellular blastoderm Homeotic selector genes Similar signal into…