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29 Cards in this Set
- Front
- Back
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occurs when selection causes differential survival of a particular phenotype
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adaptation
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can one living species be descended from another living species?
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apparently not
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a group of interbreeding individuals of the same species that produce fertile offspring
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population
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the study of the genetic variation of the individuals that constitute a population
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population genetics
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a gene consists of a specific DNA sequence that codes for
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protein synthesis
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the sum of all the alleles in a population and their relative proportions
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gene pool
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evolution can be modeled as the change in ____ between generations
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allele frequency
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is a theoretical population in hardy-weinberg equilibrium evolving?
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nope
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five assumptions for HW equilibrium
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large population size
no immigration/emigration no genetic mutations random mating no natural selection |
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the percentage of the population with a specific genotype
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genotypic frequency
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HW equation
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p2 + 2pq + q2 = 1
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what three chemicals did we use for taste test in ch 1
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sodium benzoate
thiourea phenylthiocarbamide (PTC) |
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what genotype can not taste the test papers
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homozygous recessive
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malaria is a parasitic disease transmitted by the
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anopheles mosquito
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where is the anopheles mosquito, and therefore malaria, prevalent
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the tropics
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if an individual inherits HbS and HbA,
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he has the sickle-cell trait
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if an individual inherits HbS and HbS,
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he produces abnormal hemoglobin
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the oxygen-carrying protein in red blood cells
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hemoglobin
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when getting some with the micropipettor, do you depress to first or second stop
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first
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when letting go with the micropipettor, do you depress to first or second stop
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both
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how do you know if the agarose gel is ready
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it will be slightly cloudy against a dark background
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in electrophoresis, which way do the samples run
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form negative to positive electrode
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on what voltage do you do electrophoresis
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100 volts
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about how long to you run electrophoresis
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45 minutes
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what are two common causes of changes in allele frequencies
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selection
genetic drift |
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the change in allele frequencies that occurs by chance
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genetic drift
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an allele becomes fixed in the population when
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the alternate allele becomes extinct
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when there is a catastrophic reduction in a population so that the gene pool of the survivors is adversely affected
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genetic bottleneck
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a population is founded by a relatively small group of individuals that do not have the genetic variability of the original, parent, population
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founder effect
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