When few individuals isolated start a new population
founder effect
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when frequencies of alleles change randomly due to unpredictable chances
genetic drift
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15
If carrying allele for PKU is recessive, and 1/10,000 are born with PKU in US, what is the frequency of the recessive allele?
0.01
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trap
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magnet
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gift
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baam
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15
what is hardy weinberg equation for genotypes?
p2 + 2pq + q2 = 1
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15
Mention two ways that predators can preserve their alleles
speed, behaviors, camouflage, mimicry, defenses
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When large population is drastically reduced by a disaster and then recovers changing allele frequencies
bottleneck effect
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Lose or gain alleles by movement of individuals
gene flow
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15
3 conditions for Hardy weinberg equilibrium to be true
no natural selection, no mutations, no gene flow, random mating, large population
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thief
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magnet
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gift
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banana
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when there is a double set of chromosomes to preserve alleles
diploidy
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lifesaver
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gift
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rocket
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thief
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15
Within a population of butterflies, color brown (B) is dominant to color white (b). 40% of all butterflies are white. Calculate the frequency of homozygous recessive
0.4
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Within a population of butterflies, color brown (B) is dominant to color white (b). 40% of all butterflies are white. Calculate the frequency of the recessive allele
0.63
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Competition between same sex for mates
intrasexual selection
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letter used in Hardy Weinberg to express the recessive allele