Chapter 23 Flashcards

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1
Q

Systematics

A

Study of evolutionary relationships

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2
Q

Phylogeny

A

Similarities and differences of species

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3
Q

Evolution

A

Not always divergent

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4
Q

Ancestry

A

Common ancestor

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5
Q

Derived

A

Shared by species

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6
Q

Cladistics

A

Shared derived species

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7
Q

Taxon

A

Species/higher level group

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8
Q

Outgroup

A

Related to but not member of group

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9
Q

Clade

A

Common ancestral species

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10
Q

Parisomy

A

Phylogenetic tree with fewest assumptions and fewest evolutionary traits

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11
Q

Synapomorphy

A

Derived character shared clade members

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12
Q

Symplesiomorphies

A

Shared ancestral

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13
Q

Plesimorphies

A

Ancestral states

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14
Q

Homoplasy

A

Shared derived, not inherited from common ancestor

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15
Q

Taxonomy

A

Living things of particular level

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16
Q

Hierarchy

A

Species-genus-family-order-class-phylum-kingdom-domain

17
Q

Monophyletic

A

Common ancestor of ALL descendants

18
Q

Paraphyletic

A

Common ancestor of NOT ALL descendants

19
Q

Polyphyletic

A

Not common of all descendants

20
Q

Phylogenetic species concept

A

Population is a separate species if they evolve independently of other groups