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EEB 2245 EXAM LATEST UPDATE
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EEB 2245 EXAM LATESTUPDATE
biological species concept - Answer species are groups of actually or potentially
interbreeding natural populations that are reproductively isolated from other such
groups
evolutionary species concept - Answer a species is a single lineage of populations or
organisms that maintains an identity separate from other such lineages and which has
its own evolutionary tendencies and historical fate
phylogenetic species concept - Answer 1) a phylogenetic species is an irreducible
cluster of organisms that is diagnosably distinct from other such clusters, and within
which there is a parental pattern of ancesty and descent
2) a species is the smallest monophyletic group of common ancestry
genealogical species concept - Answer species are "exclusive" groups of organisms,
where an exclusive group is one whose members are all more closely related to one
another than to any organism outside the group
recognition species concept - Answer a species is the most inclusive population of
individual biparental organisms that share a common fertilization system
cohesion species concept - Answer a species is the most inclusive population of
individuals having the potential for phenotypic cohesion through intrinsic cohesion
mechanisms
typological species - Answer defined by morphalogical similarity to a type specimen
typological species (problems) - Answer many characteris are polymorphic within
species
not all species are morphologically distince
some characters may be more important than others
to find morphological gaps, larges samples are needed throughout the rang of a species
evolutionary species concept (lecture) - Answer species is a group of natural
populations that is evolutionary independent than others such groups
biologica species concept (lecture) - Answer most widely used
darwin's writings, formalized by Ernst Mayr
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