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13 Terms
1
Directional selection
________ has the phenotypic distributed to two extreme phenotypes, ‘ two- hump graph.
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2
Disruptive selection
________ has phenotypic distribution entirely towards one phenotypic extreme.
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3
Fossil records
________ show abrupt changes in a species with periods of ‘ extinction that are perceived to be periods of stasis under the theory of punctuated evolution.
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4
rapid bursts
Punctuated equilibrium= when speciation occurs in short, ________ with periods of no change in between.
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5
Low genetic variation
________ /diversity implies that if one organism of such a population is vulnerable to a disease, the entire population is also vulnerable.
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6
Gene
________ pool= the combination of all alleles of a trait for a species.
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7
meiosis
Occurs when ________ does not occur correctly and the chromosomes are unable to be divided into two haploid gametes, and instead produce one diploid gamete by hybridization.
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8
Behavioral isolation
________= differences in mating behaviors that for two population.
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9
Sympatric speciation
________= occurs w /out a geographic barrier.
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10
Temporal isolation
________= differences in mating times for two different populations.
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11
Speciation
________ is the development of different species.
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12
Gradualism
________= when speciation occurs gradually over time.
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13
Species
________= a group of organisms that can mate and reproduce and produce viable and fertile offspring.
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