BIO SCI 94 Chapter Notes - Chapter 25: Thomas Robert Malthus, Jean-Baptiste Lamarck, Leucine

• School: UC-Irvine
• Department: Biological Sciences
• Course: BIO SCI 94
• Professor: All

Document Summary

Dependent variable is the response that in measured. Ex: limbs of vertebrates: homology can be key in biology (research) i. ii. Testing in organisms can be applied to other organisms, humans. 01/06 /2016: would choose certain traits to reproduce: artificial. Selection: thomas malthus, studied population of england and found struggle for existence b/c of the fact more are more than can survive. Inspired darwin"s theory of natural selection b: darwin"s 4 postulates (sequence, the individual organisms that make up a population vary in the traits they possess, such as size and shape. 3: some of the trait differences are heritable, meaning that they are passed on to offspring. In each generation, more offspring are produced then can survive. Natural selection occurs when individuals with certain characteristics produce more offspring then individuals without those characteristics. Antibiotics: recedes in importance in 1900s b/c, advancements in nutrition made people better able to fight off most m. tuberculosis infections quickly.