Monohybrid Cross Problem Set

Problem 3: Mendel's "Experiment 1"

In Mendel's "Experiment 1," true breeding pea plants with spherical seeds were crossed with true breeding plants with dented seeds. (Spherical seeds are the dominant characteristic). Mendel collected the seeds from this cross, grew F1-generation plants, let them self-pollinate to form a second generation, and analyzed the seeds of the resulting F2 generation. The results that he obtained, and that you would predict for this experiment are:

A.	1/2 the F1 and 3/4 of the F2 generation seeds were spherical.
B.	1/2 the F1 and 1/4 of the F2 generation seeds were dented.
C.	All of the F1 and F2 generation seeds were spherical.
D.	3/4 of the F1 and 9/16 of the F2 generation seeds were spherical.
E.	All the F1 and 3/4 of the F2 generation seeds were spherical. All of the F1 plants were true hybrids with a phenotype of Ss. The recessive trait reappears in the F2 generation.