Unit 5 Notes
Unit 5 Notes ANTH 1000
Popular in Introduction to Anthropology
Popular in anthropology, evolution, sphr
This 2 page Class Notes was uploaded by Camila Correia on Monday February 8, 2016. The Class Notes belongs to ANTH 1000 at East Carolina University taught by Joanne Phipps in Fall 2016. Since its upload, it has received 29 views. For similar materials see Introduction to Anthropology in anthropology, evolution, sphr at East Carolina University.
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Date Created: 02/08/16
Systema Naturae - Carolus Linnaeus -categories based on internal and external visual similarities -Species, Genus, Family, Order, Class, Phylum, Kingdom The Young Earth -Archbishop James Ussher -1650: Calculated that the earth was created on Sunday, Oct 23, 4004 BC (~6000 yrs old) Funny Bones Theory of Deep Time -The earth is extremely old (developed and changed via natural processes) -Basis for Charles Lyell's theory of uniformitarianism (geologic processes is the same as it was in the past as it is in the present) -Gradualist model of change Jean Baptiste Lamarck -Saw that environmental change lead to biological change -Changes with each generation inherited -Example: giraffe's necks grew in order to get food from high trees Charles Darwin -Similarities between Galapagos and mainland animals -Noted differences between animals on each island -Example: different species of birds, reptiles, mammals etc. were different from other islands because of environmental differences -Darwin's Finches; beak differences based on food preferences (leaves, seeds, buds/fruit, insects, grubs) and tool-using finches -Theory of Evolution by Natural Selection -Primary mechanism of change -External and gradual -Three main principles: 1 Variation within species 2 Hereditability of Traits 3 Differential reproductive success Types of Natural Selection -Directional Natural Selection (operates in response to environmental change) -Stabilizing Natural Selection (pressures that keep the population in check with stable environment) Gregor Mendel and Heredity -Identified dominant and recessive traits -Traits are not blended, but they function as pairs Phenotype = observable expression of genotype Genotype = genetic makeup of species, total of all genes Homozygous = individual with matching genes for a trait (AA, aa) Heterozygous = individual with non-matching genes (Aa) Mutations = changes in DNA sequence Alleles = gene variation based on location on chromosome (creates phenotypic differences) The Modern Synthesis -Combination of natural selection and inheritable traits -Mutations (increases variation; adaptive ones may lead to evolution) -Distribution of genetic variation -Genetic Drift -Gene Flow
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