HELP PLS! XX= Female XY=Male. You and your spouse are expecting your first child. What is the probablility for your child to be a male? why?

What would the probablility for your second child to be female? Why?

All but one describes an effect of aging on the digestive system. a) decreased acid secretion b) decreased elasticity of stomach c) capacity to resist damage decreases d) food remains in stomach for less time

Predict the results of a two base insertion or deletion in a strand of dna that codes for a protien, how does this differ from a three base insertion or deletion?

In the water cycle , when does water undergo a chemical change