During Mendel's second set of experiments, he allowed the Fj offspring from the first experiments to self-pollinate. Which of the following best describes
the results?
A. All the F2 offspring expressed the same version of the studied trait
as the parents had.
O B. About 25% of the F2 offspring expressed the same version of the
studied trait as the parents had.
C. All the F2 offspring expressed a different version of the studied
trait than the parents had.
O D. About 25% of the Fz offspring expressed a different version of the
studied trait than the parents had