Gender inequality a civilisational problem

The sex-ratio of the last child (SRLC) born in Indian families is excessively skewed

Legendary puzzler Martin Gardner once posed two related questions. First, Mr Smith has two children. The older is a girl. What is the probability that both children are girls?  Second, Mr Jones has two children, at least one of whom is a boy. What is the probability the other Jones kid is also a boy? 

The birth of a boy or a girl is (almost) equally likely. Under normal circumstances, 105 boys are born for every 100 girls. If we approximate to a birth ratio of 1:1 (assuming no transgender births), the first answer is deduced fairly easily. 

There exist four equally