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Evo&Eco exam 1
| Term | Definition |
|---|---|
| Malthus | published "essay on the Princip;e of population" in 1798 |
| Lamarck | Published his hypothesis of evolution in 1809 |
| Cuvier | Published his extensive studies of vertebrate fossils |
| Lyell | published principles of geology in 1830 |
| Wallace | while studying species, he sent Darwin his hypothesis of natural selection in 1858 |
| Darwin | wrote his essay on descent with modification; book "Origin of species" was published in 1859 |
| 4 main tentants of natural selection (write it down) | Individuals vary greatly in their traits; natural variation within a species; variation in traits is inherited; acquired traits cannot be inherited |
| genetic drift | chance events cause allele frequencies to fluctuate randomly from one generation to the next |
| founder effect | few individuals become isolated from larger population, smaller groups establishes new population--> gene pool of new population differs from source population |
| bottleneck effect | sudden change in environment drastically reduces size of population, surviving alleles result of chance alone |
| mutation | chance in nucleotide sequence in an organisms DNA (source of genetic variation) |
| gene duplication | can result in expanded genome (source of genetic variation) |
| sexual reproduction | existing genes arranged in new ways;crossing over/fertilization (source of genetic variation) |
| true | mutation, gene duplication and sexual reproduction are sources of genetic variation (T/F) |
| true | in a population that is not evolving, allele and genotypic frequency will remain constant from generation to generation (T/F) |
| true | no selection, no mutation, no migration, large population and random mating are the assumptions of Hardy-Weinberg (T/F) |
| intrasexual selection | male-male competition; harem defense |
| intersexual selection | mate choice; usually occurs within females; depends on males appearance or behavior |
| tentative | meaning science cannot prove anything. There will always be information that will make us change our mind. We use science to collect evidence |
| Objective | removes an bias view from the scientist |
| testable | you can test science in any way or to support evidence |
| observation | some aspect of the natural world that interest you |
| hypothesis | a plausible explanation, taking into account what is already known |
| prediction | tells what to expect if you do the experiment. "If I do X, then I will see Y" |
| experiment/results | set up the conditions to test the prediction |
| conclusion | the results can support the hypothesis, falsify the hypothesis or be inclusive |
Created by:
Miera
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