Francis Galton, a Contemporary of Charles Darwin, Studied Variation in Complex

Multiple Choice

Francis Galton, a contemporary of Charles Darwin, studied variation in complex traits such as human height. Use the bar graphs shown below to answer the following question: Which of the following statements BEST describes graph (a) , which depicts Galton's data showing distribution of offspring height from the tallest parents he studied?

A) The parental mean for the tallest parents is larger than the mean height of their offspring.
B) The parental mean for the tallest parents is smaller than the mean height of their offspring.
C) The average height of the offspring from the tallest parents is not related to the average height of their parents.
D) The average height of the tallest parents is not much more than the population mean height.