BIO SCI 94 Midterm: Bio94 Midterm1 Key Ideas

• School: UC-Irvine
• Department: Biological Sciences
• Course: BIO SCI 94
• Professor: Nancy Aguilar- Roca

Document Summary

Chapter 1: biology and the tree of life. Population is a group of individuals of the same species living in the same area. Evolution occurs in populations when heritable variation leads to differential. Fitness means the ability of an individual to produce viable offspring. Adaptation is a trait that increases the fitness of an individual in a particular. Cell theory and theory of evolution state that the cell is the fundamental unit in. Individuals with high fitness produce many surviving offsprings. environment. all organisms and all species are related by common ancestry and have changed over time because of natural selection. If the theory of evolution is correct then the rrna sequences should be very similar in closely related orgasims, but less similar in organisms that are less closely related. Species that are part of the same evolutionary lineage like plants should share certain changes in rrna that no other species have. is the common ancestor of all living organisms.