Astronomy 2021A/B Lecture Notes - Lecture 4: Leucine

• School: Western University
• Department: Astronomy
• Course: Astronomy 2021A/B
• Professor: stanimirmetchev

Document Summary

Life responds to change over different periods of time, that being said, a response to change that happens over a long period of time is considered adaptation. Natural selection suggests that the ones who are more adapt will have a better chance when competing for resources, and therefore they will live longer. Darwin studied the galapagos finches and used them as evidence for his natural selection theory. Note: darwin did not actually come up with the theory of evolution, it was actually the greeks. Anaximander (610-547 b. c. ) suggested that life originally arose from the water and evolved from simpler to more complex forms. Instructions are coded into the deoxyribonucleic acid (dna) Life: life is something that can reproduce and evolve through natural selection. The functionality and structure of cells is due to carbon: can bond as many as four atoms at a time, hydrogen, nitrogen and various other compounds make up a very small amount of the mass on.