Mendelian Genetics.1 pp.Handout.2013

Step 2 re calculate the expected genotypic

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Unformatted text preview: ___ •  q(y) = freq (yy) + ½ freq (Yy) = _____ + _____ = _____ Q2: Is the population still in Hardy-Weinberg equilibrium? Q2. Is the population still in Hardy-Weinberg equilibrium? Step 2: Re-calculate the EXPECTED GENOTYPIC frequencies •  p(Y) = freq (YY) + ½ freq (Yy) = 0.36 + 0.14 = 0.50 •  q(y) = freq (yy) + ½ freq (Yy) = 0.36 + 0.14 = 0.50 p2 = 0.52 = _____ 2pq = 2(0.5 x 0.5) = _____ q2 = 0.22 = _____ " Genotype Observed Genotype Frequency Expected Genotype Frequency YY 0.36 _____ Yy 0.28 _____ yy 0.36 _____ Now I can rest A. Nope...it's NOT in HardyWeinberg equilibrium. Another VERY SIMPLE Hardy-Weinberg problem... 4. A moth has three alleles at a locus that controls antenna color: X1, X2 and X3. X1 is dominant to X2 and X3; X1 produces red antennae. X2 is co-dominant to X3; X2X2 produces yellow antennae, X3X3 produces white antennae, and X2X3 produces light yellow antennae. The phenotypic frequencies in a population are as follows: 0.04 WHITE " 0.16 LIGHT Y ELLOW "0.16 Y ELLOW " 0.64 RED ⇒ Assuming that this population is in Hardy-Weinberg equilibrium, what is the frequency of the X3 allele in this population? "a) 0.04 "b) 0.20 "c) 0.16 "d) 0.32 "e) 0.64...
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This document was uploaded on 01/06/2014.

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