MCB 150 Study Guide - Midterm Guide: Maternal Effect, Vitelline Membrane, Acrosome Reaction
9 Feb 2017
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How does the body rise from a fertilized egg: preformation: we are already formed and we just grow bigger (person in sperm, epigenesist: structures arise de novo during embryogenesis. Single cell embryo -> blastula -> gastrula -> organogenesis. Specification: cell can autonomously without signals, form a certain cell type **reversible. Determination: cell can autonomously form a certain cell type even in a non-neutral environment **non reversible. Differentiation: process by which an unspecialized cell becomes specialized. Stages of development: gametogenesis: making of gametes, fertilization: fusing the gametes, cleavage: cell division to partition the zygote (blastula, gastrulation: organizing into the three primary layers (ectoderm, mesoderm, endoderm, organogenesis: generating organs. Positive control => control that is supposed to work when the experiment is successful. Negative control => control to show that the experiment indeed tested for what they wanted it to test; gives a negative result when the experiment is done correctly.
