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15 Cards in this Set
- Front
- Back
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What is a gene pool? |
Combined genetic information of all the members in a population |
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What does natural selection act on? |
Phenotype NOT GENOTYPE you rely on physical characteristics not nucleotides |
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What is a single gene trait? What is a polygenic trait? |
Single- a trait controlled by one gene Polygenic- a trait controlled by many genes |
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What is directional selection? |
It is good to be one of the extreme traits for higher fitness |
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What is stabilizing selection? |
It is good to have the average trait to have higher fitness |
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What is disruptive selection? |
It is good to be either one of the extreme traits for higher fitness |
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What is relative frequency? |
The number of times an allele occurs in a gene pool |
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What is behavioral isolation? |
When two populations could interbred but mating rituals prevent it |
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What is geographical isolation? |
When a population is split to two by a physical barrier |
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What is temporal isolation |
Two species are active/ reproduce at different times |
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What does reproductive isolation do? |
Separates a populations gene pool and could form a new species |
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5 conditions for genetic equilibrium? |
1. Must have random mating 2. Must have large population 3. Members of the population can't leave and new members can't join in 4. No mutations 5. No natural selection |
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If any of the 5 things for genetic equilibrium are not met what will happen |
The population will evolve |
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Who came up with the ideas of genetic equilibrium? |
Hardy Weinberg |
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What is gene shuffling? |
The process of new combos of genes through shuffling |
