ANTHR-140 Lecture Notes - Lecture 7: Hominidae, Convergent Evolution, Chordate
15 Jun 2020
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Document Summary
Evolutionary change proceeds through long periods of stasis and rapid periods of change. Systematics (taxonomy)= study of diversity of life and relationships at all levels in hierarchy. Taxon= group of organisms assigned to particular level in classification clade= group of organisms from common ancestor (king, patrick, courted, octavio, from, george, of spain) Family: genera with common attributes such as enlarged brain; hominidae. Genus: monophyly (all descendants of an ancestral taxon); homo. Cladogram: a diagram that indicates evolutionary relationships and degree of relatedness phylogeny: cladogram with time. Analogy: similar structure in function evolved independently, different precursors. Homology: similarities shared because of inheritance from the same structure in a common ancestor. Molecular systematics= science of estimating and analyzing evolutionary relationships based on molecular relationships (dna) Breed: variance of species due to artificial selection. Population: smaller groups within species temporarily and geographically isolated, within which majority of matings occur. Humans share 99. 9% of genes; have low diversity.
