ANTH 160D2 Lecture Notes - Lecture 2: Theridion, Grallator, Eulipotyphla

• School: University of Arizona
• Department: Anthropology Main
• Course: ANTH 160D2
• Professor: Matthew J. Rowe

Document Summary

Are these different species: theridion grallator = no, hawaiian happy face spider, phenotypic variation, adaptation with continued ability to interbreed vs. convergent evolution, order monotremata vs. order eulipotyphla= yes, echidnas and platypus vs. hedgehogs, moles, and shrews. Species: definition of species, a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding, the species is the principal natural taxonomic unit, ranking below a genus and denoted by a. Hybridization: when two closely related species interbreed, anthropogenic hybrids. Parthenogenesis: development of an embryo from an unfertilized egg cell, often referred to as virgin birth. Lumpers see few species with a wide range of variability in morphological features. Splitters see many species with some overlap in morphological variation. Charles darwin: grew up during the reform movement in england, theology major, hms beagle: 1831-1836, galapagos islands and the beaks of the finch, the origin of species published on november 24, 1859.