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E2

Erica Boston 5 questions

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1[blank_start]Standing variation[blank_end] is where there is more than one allele at a locus within a population at any one time.
1. AStanding variation
2Population genetic model of selection on standing variation, with 2 alleles:
change in q = [blank_start]pqs[ps+q(1-h)][blank_end]
1. Apqs[ps+q(1-h)]
3When an allele rapidly increases to a frequency of 1, a [blank_start]selective sweep[blank_end] has occurred.
1. Aselective sweep
4[blank_start]Introgression[blank_end] occurred between [blank_start]H.sapiens[blank_end] and [blank_start]Denisovans[blank_end], allowing adaptation to the [blank_start]Tibetan plateau[blank_end].
1. AIntrogression
2. BH.sapiens
3. CDenisovans
4. DTibetan plateau
5Example of selective sweep: fixation of new [blank_start]amino acids[blank_end] by selection in the [blank_start]haemogglutinin[blank_end] gene of [blank_start]HIV[blank_end] virus.
1. Aamino acids
2. Bhaemogglutinin
3. CHIV