Transcript Biology and Evolution

Biology and Evolution
1 September, 1998
Agenda
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Review: Types of dating
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Discussion of reading assignment
PTC Tasting
Discussion of Sociobiology
– Divide readings
– Teach each other
– Summary
Mendelian Genetics
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Chromosomes
Genes/Alleles
Mitosis, Meiosis
Phenotype, genotype
Dominant, recessive
Homozygous, heterozygous
Monohybrid cross
Exercise
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PTC Tasting
– What is your phenotype?
– What are your possible genotypes?
• T = Taster
• t = non-taster
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Natural selection
– Sickle cell anemia
• SS, Ss, ss
– Balanced selection
College Bowl
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What are the mechanisms for
evolution?
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Genetics
Variation
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What are the forces of evolution?
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Natural selection
Mutation
Genetic Drift
Gene flow
What is a species?
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Incapable of interbreeding
– Reproductively isolated
– Mechanically incapable
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Offspring sterile
Sociobiology
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Groups of eight
Each read a page
Tell each other what you read
– Follow page order 1-6
– Interject to explain terms
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Class discussion
Ethical Implications
Thursday
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Essay due on Sociobiology
– Email only
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Chapter 4: Monkeys, Apes, and
Humans
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Discussants: