BIOL 1201 : Bio 1201 Exam 1
Document Summary
About 1. 8 million species have been identified and named. With so many species, there are many different unifying similarities. The ability to evolve is built into organisms. Evolution is a change in the genetic makeup of a population over time as a result of natural selection: 2 principles of natural selection, variation, competition-individual will struggle to survive. There are variations within every species (e. g. , some are tall, some are short) Means some are better suited to survive (natural selection) Variability comes from genes and genes are inherited. Conclusion: more good genes survive and therefore the population changes. Life contains an order of structural levels with each level building on the levels beneath it. Each level of biological organization has emergent properties. Emergent property is a property that emerges as a result of interactions between components as complexity increases. If you mix all the components of a chloroplast together in a test tube, photosynthesis will not occur.
