<prompt> Risk of having a child with Down syndrome:Is unaffected by maternal ageDecreases with increase in maternal ageIncreases with increase in paternal ageIncreases with increase in maternal age  <response>: d. Increases with increase in maternal ageRef: Nelsons 20e p 610-614Risk of Down Syndrome Increased with Increase in Maternal AgeMaternal ageIncidence of Down Syndrome20 years1 in 150030 years1 in 90040 years1 in 10045 years1 in 30 