Which of the following characteristics did Mendel not research in his pea plant experiments?
Seed shape
Flower color
Leaf shape
Pod color
Mendel did not study leaf shape in his experiments with pea plants. Instead, he focused on seven traits that he could easily distinguish and that had clear-cut alternative forms. These traits were seed color, seed shape, flower color, flower position, pod color, pod shape, and stem length. By studying these traits, Mendel was able to develop his laws of inheritance, which provided a framework for understanding how traits are passed down from one generation to the next. While leaf shape was not one of the traits that Mendel studied, his work laid the foundation for later research into a wide range of inherited traits in plants and animals.
Option 3 is the correct answer.