Do the genetic combination of mothers play a significant role in determining the sex of a newborn?

1. Soln:

 

No, the sex of a newborn will be determined by the chromosome contributed by the father. Mothers have XX in their 23rd chromosome pair, and they always contribute one X chromosome. But fathers have X And Y in their 23rd chromosome pair. If the father inherits X, the child will be a girl, and if the father inherits Y, the child will be a boy.