Term
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Definition
| All the members of a single species occupying a particular area at the same time and capable of reproducing with one another |
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Term
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Definition
| The total of all alleles at all gene loci in all the individuals in a population |
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Term
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Definition
Large population,
no migration
no mutation for allele
random mating
no natural selection
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Term
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Definition
| The change in gene frequency from one generation to the next. Individuals do not evolve, populations evolve. |
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Term
| 5 causes of microevolution |
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Definition
Mutations
Gene flow
Nonrandom mating- inbreeding, assertive mating, sexual selection
Genetic drift
Natural selection |
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Term
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Definition
| Movement of alleles between populations |
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Term
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Definition
| Changes in allele frequencies of a gene pool due to chance |
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Term
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Definition
| A catastrophic reduction in population rapidly changes the proportion of genotype frequencies in a population |
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Term
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Definition
| A situation where a few people start a new population to increase frequency of their rare alleles |
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Term
| Reasons why organisms are genetically diverse |
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Definition
| Gene mutations, chromosomal rearrangements, crossing over, segregation, random fertilization |
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Term
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Definition
| The reproduction success of an individual relative to other members of the population, only certain members will survive and reproduce |
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Term
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Definition
| Any trait that makes an organism more suited to its environment and better able to survive and reproduce |
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Term
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Definition
| The changes in genes and traits can eventually result in the formation of a new species |
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Term
| 3 conditions necessary for natural selection |
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Definition
Genetic differences
Environmental pressure
Selective advantage |
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Term
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Definition
Directional selection- extreme phenotype favored
Stabilizing selection- intermediate phenotype is favored, most common form
Disruptive selection- 2 or more extreme phenotypes are favored |
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