Biology 1407: Exam 1 Study Guide with Complete Solutions

Biology 1407: Exam 1 Study Guide with Complete Solutions genetic variation - Correct Answer differences in alleles of genes found within individuals of a population, provides raw material for natural selection evolution - Correct Answer - genetic change in a population of organisms; in general, evolution leads to progressive change from simple to complex. - can result from any process that causes a change in the genetic composition of a population Charles Darwin - Correct Answer - proposed natural selection as the mechanism of evolution natural selection - Correct Answer - the differential reproduction of genotypes; caused by factors in the environment; leads to evolutionary change - produces evolutionary change when some individuals in population possess certain inherited characteristics and then produce more surviving offspring than individuals lacking these characteristics - result will lead population to include more and more individuals with the advantageous characteristics, so population evolves and becomes better adapted to its environmental circumstances Jean-Baptiste Lamarch - Correct Answer - rival theory of Charles Darwin - evolution occurred by the inheritance of acquired characteristics inheritance of acquired characteristics - Correct Answer - known as Lamarckism, the theory that individuals genetically pass on to their offspring physical and behavioral changes developed during the individuals' own lifetime - ex: giraffes with short necks stretch to reach food, and this extension will pass on to subsequent generations