BIO152H5 Chapter Notes -Common Descent, Basilosaurus, Phalanx Bone
Document Summary
Rub skin against the shallow ocean floor when molting . Belugas are able to twist their heads, as they can move their necks. In other whales, their vertebrae are fused, but not in belugas (pygmy) seahorse. Female has eggs and then deposits them in the male, where they"re fertilised and mature. If the coral was bleached (polyps and algae leave) then they"d die as they could not camouflage into their environment. A trait is an adaptation if it increases survival in a certain environment. Darwin discovered it before wallace, until wallace sent darwin a letter claiming he was going to go public with it. Darwin and wallace proposed that change in species through time does not follow a linear, progressive pattern but instead is based on variation among individuals in populations. A population consists of individuals of the same species that are living in the same area at the same time. Population thinking; populations evolve, not individual organisms.
