The change in heart rate that occurs between 1 and 5 minutes of exercise is an adaptation that ?

Aboy with an extra x chromosome probably has which of the following syndromes?

Round seeds and yellow seed color are dominant to wrinkled seeds and green seed color. which punnett square represents the correct way to set up the cross rryy  ´  rryy? 

Which is the graph of the piecewise function f(x)? f(x) = image for option 1 image for option 2 image for option 3 image for option 4