BIOC19H3 Lecture Notes - Lecture 2: African Clawed Frog, Northern Leopard Frog, Cell Potency
Document Summary
We have the genetic information, the genes encoded in dna, associated with chromosomal proteins. Begins with the zygote (fertilized egg) which is a large cell, single-cell made up of nucleus and cytoplasmic mass, rst undergoes division to create a 2-cell, than 4, than 8, than 16. When this reaches the 16-cell stage, it is called a morula. With further division, we move from the morula to the blastula (a hollow ball of cell) with a center called blastocoel ( lled with liquid. Than the process of gastrulation which is caused by an invagination which forms a double layered gastrula (inner layer endoderm and outer layer ectoderm) Blastomere: a cell resulting from the cleavage of a fertilized egg during early embryonic development before blastula formation. Morula: spherical, solid (i. e. no blastocoel) embryonic mass of blastomeres formed before the blastula and resulting from cleavage of the fertilized ovum. Lecture 2: interactions of the nucleus and cytoplasm.