BISC 121Lg Lecture Notes - Lecture 18: Convergent Evolution, Ardipithecus, Bipedalism
Document Summary
Lecture 18: embryos develop in placenta, born early, crawl to pouch, advantage to mothers because they are debilitated for a shorter amount of time. Could be helpful in areas with many predators. Rodents are almost of mammals: most popular mammals. Bats make up almost of mammals: 2nd most popular mammals. Flight probably helped them diversify (cid:862)bush (cid:373)eat(cid:863) trade is source of ebola: (cid:862)(cid:449)hite (cid:374)ose(cid:863) fu(cid:374)gus disease is de(cid:448)astati(cid:374)g bat populatio(cid:374)s. Primates have morphological attributes, but are difficult to define: hands and feet for grasping, opposable thumbs, large brains, short jaws, flat nails, forward facing eyes, well-developed parental care, complex social behavior. Lemurs, pottos, and tarsiers are least related to us. ~40 million years ago, monkeys were established in africa, asia, south america: old and new world monkeys had different adaptive radiation. New world monkeys are older and arboreal. All great apes are endangered or threatened. Humans and apes shared much of ancestral history.
