BIO SCI 93 Lecture 17: Embryos

• School: UC-Irvine
• Department: Biological Sciences
• Course: BIO SCI 93
• Professor: Dr. Salme Taagepera

Document Summary

Process when the adult fly develops from the embryo. When fertilized eggs divides resulting in asymmetrical distribution of determinants in daughter cells. Pax6 gene codes for transcription factor that initiated differentiation of cells that form eyes. Add an activator for the pax6 gene to embryonic cells that are in the process of forming legs. Abnormal legs containing eyes will develop at thorax. Epinephrine receptors low high high low low high high low low high. Glycogen phosphorylase breaks down glycogen into glucose. More glycolysis = higher glycogen phosphorylase activity. More atp synthase in fiber 1 because # of mitochondria is high. Meiosis (2n) n + n + n + n. Non sister chromatids connect and trade sections = crossing over. Spindle fibers attach to each dyad at kinetochore. Chiasmata break apart and sister chromatids begin to separate. Spindle formation bein and centromeres move towards poles. Spindle fiber forms and lines up chromatids are meta plate.