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15 Cards in this Set
- Front
- Back
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Population # can vary in _____ & _____.
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Space & Time
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Time Lag
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over or undershoots in a pop.
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Fluctuations can significantly impact _____ populations.
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SMALL
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Small subpopulations have ______ rates of dissapearing
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HIGHER rates
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Small subpopulations vulnerable to extinction...why?
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- susceptable to random environment catastrophes
- small subpopulation more likey to go extinct - more distant plant subpop. more likely to .....look @ pp |
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Conservation:
mainland = _______ corridor = ________ |
mainland = good
corridor = ok |
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Scandanavian Wolf Pack
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1960-80's population GONE.
1991 population reestablishing - new male offspring created genetic diversity. - population SURVIVED |
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Flordia Mountain Lion
("kinked" tails) |
- small pop. in Everglades
- females had "kinked" tails - kinked tailes= sign of inbreeding (genetic abnormalities) BECAUSE of a lack in genetic variation |
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Solution to FL. Mountain Lion
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to bring in M.lions from Texas (6 of them) in 1996
RESULT: gene died out, no more "kinked" tails |
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Evolution
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a genetic change in a population.
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Gene
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segment of DNA...
coding segment of DNA |
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Allele
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particular form of a gene
i.e brown hair, brown eyes |
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There are __ base pairs.
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4
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Only needs __ change in the base pair of DNA, which results in phenotypic change
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1
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Explain Sickle Cell
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Is found most in Africa & Asia
why? most resistance to MALARIA causes: - organ problems - severe fatigue |
