BIOL 102 Lecture Notes - Lecture 5: Robert Fitzroy, Red Algae, Marine Iguana
Document Summary
Captain- - voyage of the hms beagle. Believed the earth was older than 6000 years. Happens during the lifetime and then is transmitted to offspring. Ex. giraffes stretching their necks baby giraffes have longer necks. Independently drew the same conclusions as darwin sent them to him. How was darwin able to sample dust on the hms beagle. Dust from sand storms on the sahara desert. Oxygen in water is deadly for a lot of microbial organisms, so when a ship moved throw the water the water around becomes oxygenized. Extinction is an ongoing processit does not stat or end. The islands each had animals with phenotypic differences. Discussed with darwin reasons for different beak shapes. Nches became separate species because of isolation on different islands with different food sources. Brought in red algae that could not be digested by iguanas. This stirred up a lot of criticism.
