Discuss primate characteristics and introduce the group of primates which include Apes, Humans, and Monkeys.
Discuss manual dexterity, opposable thumbs, flat nails, binocular vision, diurnal and nocturnal activities. Also discuss methods of locomotion and body flexibility. View images of brain to body size ratio and how the large brains are related to vision acuity, memory, coordination of body parts and social behavior development. . Discuss reproductive rate, number of offsprings, gestation period and newborn dependency.
Discuss test grade. Define and discuss the steps involved in the heterotrophic hypothesis which deals with the origin of life on Earth. Introduce the steps from the formation of the planet and the original atmosphere through the formation of the hot sea. Discuss how the original atmosphere formed amino acids and then basic proteins. Discuss why heterotrophs would have appeared before autotrophs. Define and discuss heterotrophs and autotrophs. Discuss why and how heterotrophs would lead to aerobic autotrophs.
Quickly review allopatric and sympatric speciation. Discuss patterns of evolution which include adaptive radiation co-evolution, parasitism, convergent evolution, and the rate of speciation. Include definitions for morphology, physiology, and behavior.
Define speciation, and discuss how it is driven by reproductive isolation. Discuss reproductive isolation. Introduce allopatric speciation as separation into two or more populations due to physical barrie. Use example of squirrels and the Grand Canyon. Note that allopatric involves divergence from a common ancestor. Discuss sympatric speciation as species evolution without a physical barrier. Determine that it is more common amongst plants and insects. Discuss polyploidy and mutations.
Continue to discuss forces which are involved in genetic equilibrium. Discuss and define mutations and how they alter frequencies. Discuss how natural selection alters frequencies. Define and discuss natural selection can be determined by stabilizing selection, directional selection, and disruptive selection. Use examples for each and images.
Outline and discuss the 5 major factors, conditions, which affect genetic equilibrium and the Hardy-Weinberg equation. Define and discuss genetic drift and use example to demonstrate the founders effect and the bottleneck effect. Discuss gene flow and the effect on a closed system and open system. Discuss random mating and non random mating which leads to inbreeding accompanied by harmful recessive disorders.
Discuss mechanisms of evolution which are other than natural selection. Introduce population genetics and the Hardy-Weinberg equation. Discuss how allele and genotype frequencies remain constant over generations when no evolutionary forces are active. Work a sample H-W equation using earlobe attachment alleles. Include homozygous dominant numbers, heterozygous dominant numbers, and homozygous recessive numbers. Determine that if any answer is different than 1, then evolution is occurring in a population. Indicate that there are 5 common conditions, or forces, which will act on evolution. Each will be discussed tomorrow
Session Minutes
45
Minutes Student Attended
45
Lesson Comments
Aiden always has good questions to be answered. He always works at maximum effort.
Briefly discuss Lamarck's theory of evolution and why this theory no longer is applicable. Begin discussion on population genetics, which began in the early 1900's. Discuss why alleles were understood to be one form of an inherited trait capable of being passed on. Introduce that alleles and genotype frequencies remain constant over generations if no evolutionary forces are active. Define generic equilibrium
Review evidence of evolution through comparative anatomy, homologous structures, vestigial structures, and comparative embryology. Define and discuss comparative biochemistries role as evidence for evolution. Introduce adaptations as one of Darwin's key points as well as how adaptations determine fitness. Discuss camouflage and mimicry as morphological adaptations, view images, and discuss antimicrobial resistance.