BIO 105 Lecture Notes - Lecture 20: Gene Expression, Microevolution, Macroevolution
Document Summary
Cells that divide indefinitely in culture and give rise to specialized cells. Generally give rise to only a limited range of cell types. Give rise to wider range of cell types. Treat disease by altering an afflicted individual"s genes. Nothing in biology makes sense except in the light of evolution . Organisms that exist today arose by descent and modification from more ancient forms of life. Explains history of life on earth and diversity of life. Change in the characteristics of a population of organism over the course of generations. Evolutionary adaptations inherited characteristics that enhance survival and reproductions (lice, bugs immune to pesticides) Microevolution- change in frequency of alleles in a population"s gene pool over generations. Gene pool: all alleles of all genes of all individuals in a population. Macroevolution- changes that occur over long periods of time and result in the origin of new species. Living things also change, or evolve over generations.
