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BIO 105 > Chapter 12 > Flashcards

Chapter 12 Flashcards

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Biology 101 flashcards
1
Q

Species

A

a group of individuals that regularly breed together and are generally distinct from other species in appearance or behavior

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2
Q

Binomial

A

two-parts

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3
Q

Genus

A

broader biological category to which several similar species may belong

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4
Q

Subspecies

A

subdivision of a species that is not reproductively isolated, but represents a population or set of populations with a unique evolutionary history

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5
Q

Gene Pool

A

sum total of alleles in a species

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6
Q

Gene Flow

A

movement of alleles within a gene pool

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7
Q

Hybrid

A

cannot reproduce

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8
Q

Speciation

A

the evolution of one or more species from an ancestral form

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9
Q

Founder Hypothesis

A

the idea that the establishment of a new population far from the original may lead to new species

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10
Q

Polyploidy

A

hybrids can occasionally become fertile through polyploidy

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11
Q

Gradualism

A

slow accumulation of small changes over long period of time

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12
Q

Punctuated Equilibrium

A

rapid change followed by long periods of no change

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13
Q

Biological Race

A

populations of one species that have diverged from each other as a result of isolation of gene pools

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14
Q

Genealogical Species Concept

A

defines species as smallest groups of reproductively compatible individuals descended from a single common ancestor

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15
Q

Morphological Species Concept

A

emphasizes physical differences

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16
Q

Allele Frequency

A

evolution results in a change in allele frequency.

17
Q

The Hardy-Weinberg Theorem

A

states that allele frequencies will remain stable in populations that meet these conditions

18
Q

Convergent Evolution

A

traits shared by unrelated populations due to similarities of environment

19
Q

Genetic Drift

A

change in allele frequency that occurs due to chance

20
Q

Sexually Selected

A

when a trait influences chance of mating

BIO 105 (13 decks)

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