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ch.. 22,23,24
| Question | Answer |
|---|---|
| an example of natural selection would be: | darwin's finches |
| mutations aren't always a bad thing. sometimes they can help the organism to ___________ to their environment. | adapt |
| true or false: organisms evolve. | false, populations can evolve but not a single organism. |
| adaption is a big part of evolution. why? | because it helps a organism become well fit for its anvironment so it won't be killed off. |
| name the five conditions of the Hardy-Weinberg equilibrium. | 1) no mutations. 2)random mating. 3)no natural selection. 4)no genetic drift. 5)no gene flow. |
| prezygotic barrier means.. | before fertilization |
| mutations introduce what to a population? | variations |
| what does this describe? when an organism leaves to be somewhere alse and takes it's genes with them; leaving the gene pool to no longer be 50/50. | gene flow |
| genetic drift happens in what kind of population and what is it? | large; organism with disadvantage dies or gets eaten. |
| selective breeding means.. | the organism searches for something in particular in the opposite sex. |
| habitat isolation: | two animals living in different habitats that never meet, therefore never breed. |
| hybrid breakdown: | when two hybrids breed and produce offspring that is so bad off, it's a waste. |
| when two species have a different mating season, this is called: | temporal isolation |
| reduced hybrid viability: | the hybrid organism is not near as strong as a non-hybrid organism. |
| when the hybrid is strong and "normal" but barren, is know as: | reduced hybrid fertility |
Created by:
cpfletcher123
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