BIO152H5 Lecture Notes - Lecture 16: Ecological Niche, Flightless Cormorant, Allopatric Speciation
Document Summary
Male builds a bower structure, attracts females with a song. Female looks at the structure and if she likes it she mates with the male. Male has no role in bringing up of the offspring. These birds will spend years to build structures. Uses colors to attract the females (red, yellow flowers) Ancestors could fly but the new ones cant. Biological concept (if members interbreed and produce viable, fertile offspring) More on interbreed rahter than physical similarity. Reproductive isolation (biological factors athat impede production of viable, fertile offspring) Ex. wester and easter spotted spuck mates in different times. Ex. blue footed boobies courtship as blue color. Donkey + horse mule (can"t undergo meiosis) But in later generations f2*f2 (not many viable or fertile) Biological species (can"t be applied to asexual reproduction (bacteria) or fossils) Poorly on snow, can become salmon eating specialist. Morphological species (structural features asexual and sexual species)
