Punet Squares

Question 1

A mother has the chromosomes XX
A father has the chromosomes XY
What is the chance of the child being XY

Answer 1

XX XY

XX XY 50%

Question 2

A both parents are carriers of Cystic Fibrosis, what is the chance of their child not being a carrier and not having Cystic Fibrosis?

Answer 2

25%