BIOL 1030 Lecture Notes - Lecture 7: Cell Membrane, Oocyte, Meiosis

• School: University of Manitoba
• Department: Biological Sciences
• Course: BIOL 1030
• Professor: Kevin G.Scott

Document Summary

Isolecithal: mesolecithal telolecithal, eggs are large cells that contain yolk (meiosis produces 4 cells, but only 1 of those. The female gamete (egg) is large and non-motile and contributes all the organelles and cytoplasm to the zygote: features of the eggs includes: The cytoplasm surrounds the nucleus (it also suspend cytoplasmic gradual: cortical granules. The plasma membrane of the egg surrounds the cytoplasm: another membrane that surrounds the plasma membrane is called the vitelline layer. In sh) have micropyle it is one (door) where the sperms go in (not all species have it) Yolk of an egg: yolk is essentially the protein and fat rich granules within the cytoplasm. It gets the yellow colour and thick texture form the concentration of the yolk granules. It provides nourishment for the developing embryo (the yolk is the actual ovum) Thought-out the animal kingdom the concentration/ the amount of yolk moms pack into the egg is very variable amount and distribution.