ANT101H5 Chapter Notes - Chapter 2-3: Zygosity, Microevolution, Meiosis
Document Summary
History of evolutionary thought: natural selection - most critical mechanism of evolutionary change, first articulated by. All species capable of producing offspring at faster rate than food supplies increase. Those with favourable variations or traits have advantage. Traits inherited, individuals who produce more offspring said to have greater reproductive success. Latter generations may be distinct from ancestral ones. Constraints on 19th century evolution theory: natural selection acts on variation within species, de-oxy-ribo-nucleic acid (dna) crucial development that linked natural selection with being hereditary double stranded molecule that contains genetic codes. Lead to sequencing of human genome entire genetic makeup of individual or species. Opposition to evolution: must have understating of biology and genetics which most lack, people want clear cut answer that science cannot provide for complex issues, people raised in system that don"t emphasize biological continuity between species. Intro: genetics study of how traits are transmitted from one generation to the next.
