ANTH 101 Lecture Notes - Lecture 8: Wilfrid Le Gros Clark, Carl Linnaeus, Inner Ear
Document Summary
Taxonomy: taxis: arrangement, nomia: method, the classi cation of all living organisms, systematics: branch of biology that describes patterns of variation in organisms, carl linnaeus. Homologous traits: similar looking features in organism are a result of shared ancestry. Analogous traits: similar features in organisms that have evolved under the same adaptive pressures, but are not from the same ancestor. Ancestral traits: traits inherited by two organisms from a distant common ancestor. Derived traits: a trait that is a modi cation of an ancestral traits: shared- shared between two or more species, unique- only one group, classi cation. Gradistic: grouped based on similarity in appearance and shared ancestral traits, does not use dna. Cladistic: grouped based on derived traits, uses dna - what we use in class: clad: cluster of species that have a similar derived traits. Does not depict distance in time between clads.
