BIOL 1202 Study Guide - Midterm Guide: Hemoglobin, Absolute Dating, Genetic Variation
Document Summary
Chapter 22: descent with modification- a darwinian view of life. Evolution: two main ideas: change over time of the genetic composition of a population, decent of modern organisms with modification from preexisting organisms. Accumulation of inherited characteristics that enhance organisms" ability to survive in specific environments. Use and disuse: bodies of living organisms are modified through the use or disuse of parts. Inheritance of acquired characteristics: these modifications are inherited by offspring. The unequal survival and reproduction of organisms due to environmental forces, resulting in the preservation of favorable adaptations. Process selects from what is available in the gene pool. Mechanism behind natural selection: variability, heritability, differential reproductive success. Selective breeding of organisms to encourage the occurrence of desirable traits. The resistance strains will survive while the non-resistant strains will be killed. Homologous= structures or other attributes in different species that resemble each other because of common ancestry.
