BIO 1130 Lecture Notes - Lecture 2: Coevolution, Mitosis, Stamen

• School: University of Ottawa
• Department: Biology
• Course: BIO 1130
• Professor: Jon Houseman

Document Summary

By the late cretatous it is splitting apart again. Amniote egg mean the embryo can be placed on land. Keratinized skin (water proof skin) [kertin protein dumped into the outer layer of cells on the body before it dies, add oils to this to water proof it, and a exible water proof skin it created] They will be able to feed on land due to change in musculature that moves the jaw related to how they are attached to the skull. In early forms the jaw muscles are attached on the inside surface of the skull thus, then you move the jaw muscle, the muscle shape is changed inside the brain case. So temporal fenestra allow them to change the shape of the muscles without changing the volume of the brain case because they are hoels in the temporal skull regions that allow the muscle to pass on the outside. Basically sea water (saline enviro) in which embryo lives.