9119092
Beschreibung
Frage 1
Frage
Allele frequencies in a [blank_start]population[blank_end] remain [blank_start]constant[blank_end] over time unless acted upon by evolutionary [blank_start]forces[blank_end].
Antworten
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population
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constant
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forces
Frage 2
Frage
Which of these is not an assumption of the Hardy-Weinberg equilibrium?
Antworten
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Large population size
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No natural selection
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No mating
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No mutations
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No migration
Frage 3
Frage
The frequency of alleles can be calculated by:
Antworten
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p + q = 100
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p + q = 1
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p^2 + 2pq + q^2 = 1
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p^2 + pq + q^2 = 100
Frage 4
Frage
The genotypic frequency can be calculated by:
Antworten
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p^2 + pq + q^2 = 1
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pq^2 + 2pq + q^2 = 1
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p^2 + 2pq + q^2 = 1
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p1^2 + p + q = 1
Frage 5
Frage
1 in 2500 children are born with the recessive disease cystic fribrosis. What proportion of the population are carriers of this disease?
Antworten
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0.0004
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0.02
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0.98
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0.0392
Frage 6
Frage
Genetic drift is a change in allele [blank_start]frequencies[blank_end] due to random, [blank_start]non[blank_end] natural selection events.
Antworten
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frequencies
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non
Frage 7
Frage
Stabilising selection [blank_start]reduces[blank_end] variation but [blank_start]doesn't[blank_end] change the mean. Directional selection [blank_start]changes[blank_end] the mean value toward an [blank_start]extreme[blank_end]. Disruptive selection [blank_start]favours[blank_end] the two extremes, and often leads to [blank_start]speciation[blank_end].
Antworten
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reduces
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increases
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doesn't
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extreme
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changes
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favours
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speciation
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extinction
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