Identify the correct statement.

Mendel crossed tall and dwarf pea plants to study the inheritance of one gene and observed that all the F1 progeny plants were tall.Gregor Mendel, conducted hybridisation experiments on garden peas for seven years.Mendel’s experiments had a large sampling size which gave greater credibility to the data that he collected.Watson received his Ph.D. degree in 1950 on a study of the effect of hard X-rays on bacteriophage multiplication.