Term
| Natural selection can be defined as ? |
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Definition
| descent with modification |
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Term
| What results in evolutionary adaptation? |
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Definition
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Term
| Name a component of the fossil record. |
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Definition
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Term
| The oldest fossils are known from about ______ years ago. |
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Definition
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Term
| Homology is evidence of ? |
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Definition
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Term
| The presence of gills in both fish and human embryos is an example of ? |
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Definition
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Term
| The similarity of the embryos of fish, frogs, birds, and humans is evidence of ? |
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Definition
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Term
| Name 4 requirements of natural selection. |
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Definition
1. Inheritance
2. Differential reproductive success
3. Overproduction of offspring
4. Genetic variation |
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Term
| Give an example of a population. |
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Definition
| Ex.: the termites infesting your house. |
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Term
| The smallest unit of evolution is what? |
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Definition
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Term
| If a species is found in several colors, what is responsible? |
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Definition
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Term
| Mutuation is most likely to be ? |
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Definition
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Term
| All alleles of all the genes within a population define that population's ? |
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Definition
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Term
| If the frequence of a dominant allele is .7, what's the recessive freq.? |
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Definition
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Term
1. In Hardy-Weinberg, what is p-squared?
2. What is 2pq? |
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Definition
1. frequencey of AA genotype
2. Freq. of Aa |
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Term
| What does NOT occur in a Hardy-Weinberg equilibrium population? |
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Definition
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Term
| Genetic drift won't occur if what? |
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Definition
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Term
| After a bottleneck, a population recovers to having the same number of individuals. What is true of the genetic variation? |
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Definition
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Term
| Why would the Amish have a higher incidence of polydactyly than average? |
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Definition
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Term
| Gene flow is accomplished by ?? |
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Definition
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Term
| Darwinian fitness measures ?? |
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Definition
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Term
| Give an example of directional selection. |
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Definition
| an increase in antibiotic-resistent bacteria |
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Term
| In Africa, the maintenance of the sickle-cell allele in human population is attributed to what? |
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Definition
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Term
| Macro evolution includes (name 4)? |
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Definition
1. mass extinctions
2. origin of species
3. adaptive explosions
4. the evolution of biological novelties |
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Term
| On what basis are populations assigned to the same biological species? |
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Definition
| being able to interbreed and produce fertile offspring. |
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Term
| Biological species concept cannot be applied to ? |
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Definition
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Term
| A reproductive barrier that prevents specis from mating is an example of ? |
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Definition
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Term
| What type of reproductive isolating mechanism: female only mates with a male that does a certain action. |
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Definition
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Term
| Reproductive barrier that occurs when 2 species mate but fail to produce fertile hybrids is: |
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Definition
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Term
| When two species mate and the offspring die in development is: |
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Definition
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Term
| Describe allopatric speciation. |
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Definition
| One species is separated by a geographic barrier, and through time, the subpopulations become two species |
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Term
| Sympatic speciation includes what? |
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Definition
| Temproal isolation, mechanical isolation, postzygotic barriers, behavioral isolation |
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Term
| A pattern of evolution in which most change in appearance takes place during a relatively short period of time fits the _____ model of speciation. |
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Definition
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Term
| Earthquakes are a result of _______. |
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Definition
| the movement of continental plates against one another |
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Term
| A period of mass extinction is often followed by _____. |
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Definition
| a massive increase in diversity |
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