According to Hardy - Weinberg principle (p+q)2 = p2 +2pq + q2 = 1Where, p = the frequency of allele A q= the frequency of allele a p2 = the frequency of individual AA q2 = the frequency of individual aa 2pq = the frequency of individual Aa(AA)p2 = 360 out of 1000 individual orp2 = 36 out of 100q2 = 160 out of 1000 or q2 = 16 out of 100.So, q = 0.161/2 = 0.4As p+q = 1so, p is 0.6