The ratio of known wives, sons and daughters is:
If a son is born, the inheritance ratio is-wife: child = 1/3: 2/3 = 1: 2.
If the child is a daughter, the inheritance ratio is-wife: female = 2/3: 1/3 = 2: 1.
So the genetic ratio of twins is-wife: child: female = 2: 4: 1,
That is, the wife's 2/(2+4+ 1)=2/7,
Children get 4/(2+4+ 1)=4/7,
Female is1/(2+4+1) =1/7.
Very satisfied with the adoption, thank you.