Hardy–Weinberg Mating Table for Two Alleles of an Autosomal Gene

Table 20.2 Hardy—Weinberg Mating Table for Two Alleles of an Autosomal Gene Mating Mating Frequency Progeny Genotypes A1A1 A1A2 AZAZ A1A, x AA (p2)(p2) = p4 p4 — — A1A1 X A1A2 2l(P2>(2Pq)1 = 41030: 2p3q ZP3q '— A1A1 X A2A2 2[(p2)(q2)] = 2p2q2 — 2p2q2 — A1A2 X AvAz (ZPqXZPq) = 4P2q2 quz ZPZqZ quz A1A2 X A2A2 2[(2Pq)(q2)l = 4W3 — 2an 2Pq3 A2A2 >< A2A2 (q2)(q2) = q4 — — q4 Total 1.0 p2 2pq qz Among the progeny, a common term is factored out of each summation to produce the frequency of each genotype: A1A1= P4 + 2P3q + 10qu = p21p2 + 2pq + c122 = p2 A1A2 = 293q + 2p2q2 + szq2 + 210013 = 2quP2 + m + m + 6122 = 2pq A2A2 = quz + M? + q“ = 0/2032 + 2100: + <72) = <72 The sum of progeny genotype frequencies is p2 + 2pq + q2 = 1.0.