Answer:
3. used cross breeding to purposely breed plants
4. studied a variety of pea plant traits
6. studied several generations of plants
Explanation:
Known as the father of genetics, Gregor Johann Mendel was born in what is now the Czech Republic. He entered the monastery at a young age, and there he learned agrarian sciences and various techniques of artificial pollination, which allowed the crossing of various plant species. Through his experiments, Mendel discovered and answered several questions about heredity. We can state that Mendel's experiments used crossbreeding to purposely create plants, studied a variety of pea plant characteristics, and studied several generations of plants.
