Term
| What are the 5 conditions required for HW equilibrium? |
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Definition
| large population, no migration, no mutation, no natural selection, random mating |
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Term
| The emergence of drug-resistant strains of HIV in patients who initially respond well to anti-retroviral drugs illustrates.. |
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Definition
| all of the above (all three have the letter V) |
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Term
| Over the long run, mutations are important to evolution because... |
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Definition
| they are the original source of genetic variation |
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Term
| the phrase "natural population" is important to the biological species concept. one of the reasons for this is that... |
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Definition
| if two populations co-occur but do not interbreed in nature, they are separate species. |
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Term
| Speciation of finches on the Galapagos Islands is an example of.. |
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Definition
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Term
| which of the following is a reason why evolutionary radiation is likely to occur on islands? |
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Definition
| islands may have fewer plant and animal groups and thus present more ecological oppotunites |
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Term
| the earliest organisms were probably... |
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Definition
| unable to live in the presence of oxygen |
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Term
| measurement of 14C radioactivity in sedimentary rocks or fossils enables us to |
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Definition
| determine how long ago an organism died |
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Term
| the longest period of time on Earth was |
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Definition
| with singled celled life only |
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Term
| the major difference between the earliest big evolutionary radiation, the Cambrian Explosion, and all later evolutionary radiations is that... |
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Definition
| during the Cambrian, most new body plans originated |
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Term
| evolution has constantly occured, but has not occured as consistent rates. |
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Definition
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Term
| The evolution of thick shells by snails probably occurred because... |
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Definition
| as predators of snails evolved, thicker snail shells provided protection from predation |
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Term
| most species that ever existed... |
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Definition
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Term
| gazelles jump up and down (stott) when they see a cheetah, why? |
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Definition
| to signal to the cheetah that it has been spotted and so a chase would be unproductive |
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Term
| missing out on a chance to do something in order to do something else is... |
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Definition
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Term
| for the following behaviors, which is NOT one of the likely costs of performing that behavior? |
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Definition
| Female African widowbird choosing mate with long tail: decreased fitness of offspring |
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Term
| what's true about altruistic behavior? |
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Definition
| it's puzzling to evolutionary biologists because of the costs to individual fitness and some altruistic behaviors can be explained by kin selection |
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Term
| Which of the following is an example of density-independed population regulation... |
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Definition
| an early cold spell kills 80% of the lemmings in a particular area |
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Term
| deleterious allels are least affected by natural selection if they are present in... |
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Definition
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Term
| when comparing humans living 8000 years ago with humans living today, we would expect 8000-year ago survivorship curve... |
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Definition
| to have a Type III beginning, a type I middle, and an early type I-ish finish |
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Term
| Squirrels living near 10th street would have what curve? |
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Definition
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Term
| The sea star "pisaster" is considered a "keystone species" because... |
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Definition
| its removal results in a dramatic reduction in the number of other species in this environment |
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Term
| In _____ coevolution, species traits are influenced by interactions with a wide variety of predators, parasites, prey, or mutualists |
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Definition
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