Download presentation
Presentation is loading. Please wait.
Published byWinfred Butler Modified over 9 years ago
1
Answer the following questions (p106-111) What argument does Monte Verde produce? Reasons/Evidence List the ways humans migrated to America. Explain/Details What does the Olsen Chubbuck site suggest about hunting patterns? We’re Coming to America!!!
2
Human Variation Why are there physical differences?
3
Natural Selection Directional shift Average value will shift because it is beneficial. (Skin) Normalizing Selection Average value will not shift, but the extremes are removed. Balancing Selection Heterozygous (different) combinations of alleles is favored. Genetic Drift Removal of less frequent “neutral” genes from isolated groups. Process of Human Variation
4
Gene Flow Passing of genes from one population to another. Decreases differences. Cline – variation in frequency Influence of the Environment Climate may influence growth and development Influence of Culture Modifications to life may affect genetic adaptations.
5
Take notes on the following from Ch. 7 Body Build Facial Construction Skin Color Adaption to High Altitude Height Infectious Diseases Sickle-Cell Anemia Lactase Deficiency Variation in Populations
6
Body Build Bergman’s Rule Body size and temperature. Allen’s Rule Length of limbs based on temperature/climate Facial Construction Size of the nose based on climate (humid – short flat nose) Skin Color Gloger’s Rule People living in warmer climates have more melanin. Adaption to High Altitude Theory of larger chests, greater lung capacity. Variations in Population
7
Height Temperature Nutrition Infectious Diseases Develop inherited resistance to diseases. Sickle-Cell Anemia Abnormality of red blood cells. (connection w/ malaria) Lactase Deficiency Inability to digest lactose (temperate climates) Variations in Population
8
Race Classificatory way to describe population variants. Racism Belief that some races are inferior to others. Misused and misunderstood (associated with racist thought) Product of adaptive traits Traits that happen because of natural selection tend to cluster in regions. Race - Biological
9
Used to describe groups. Discriminate Make groups Superior/Inferior Developed Nations White Underdeveloped Nations Other Race Social
10
European Advance Formed later civilizations Colonized much of the world Brought diseases (killed natives) Racial Intelligence Whites are genetically smarter (belief) Alpha Beta IQ test. IQ Tests Not accurate IQ influenced by social environment European Advance Racial Intelligence
11
http://www.youtube.com/watch?v=YyL5EcAwB9c http://www.youtube.com/watch?v=YyL5EcAwB9c http://www.youtube.com/watch?v=gOS3BBmUxvs&f eature=relmfu http://www.youtube.com/watch?v=gOS3BBmUxvs&f eature=relmfu
12
Genetic Engineering to replace maladaptive traits. SUPERHUMAN!!!!!!!!!!!!!! Perfect Human
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.