Biology 1001A Lecture Notes - Directional Selection, Generation Time, Common Cold
Document Summary
Lecture outcomes: lecture 22 mutualistic, competitive and antagonistic relationships between species, given "real world" examples: mutalism: when both may benefit. The plant gets to exchange gametes, and the bird gets nector, or the bat gets the food reward. Ocasia plant: and ocasia ants: the ants benefit by getting shelter. The plant benefits: ants will attack: rush to defend the plant. Each species in this case: offering protection to another. Domesticaiton: many species which we use as livsestock, pets. We breed these speies, cause them to be more abundant, and they provide us with a benefit. Species will be competing for a resource: usedby more than one resource. There will be competition between the two of them. Cheetah: range overlaps with lions in africa: both of these are competing for food. Compete for pray, lion can chase the cheetah away. Each of the species is worse off because the other species is present.
