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Chapter 4

CHAPTER 4.docx
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Department
Anthropology
Course
ANT203H5
Professor
Heather Miller
Semester
Summer

Description
Chapter 4biological species concept defines species in terms of reproductive capability if organisms are capable of breeding naturally and can produce fertile offspring they are classified in the same species1 organisms from different populations must be capable of interbreeding2 these matings must occur in nature3 offspring must be fertile it assumes two species either belong or do not belong to same species suggests change was instantaneous Ignores variation in a groupphylogenetic tree a diagram showing the evolutionary relationships between species2 different ways to look at species overtime 2 different modes of species change1 anagenesis the transformation of a single species over time straightline evolutionchronospecies labels given to different points in the evolutionary lineage of a single species over time different stages in the evolution of a single evolutionary lineageas a species changes over time chronospecies refers to the different stages in recognition of the biological changes
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