How did Mendel make sure that the plants were true breeding?

Explanation

Selection of true breeding plants. Mendel selected 7 pairs of pure or true breeding varieti as the starting meterial for his experiments. On self pollination or self breeding, a pure variety give rise to offspring having similar trait, e.g., tall variety with tall offspring, a red flowered variety wil red flowered offspring, etc. Mendel employed traits of seven characters for his experimentatio one from each variety. All the characters had easily disinguishable alternate traits, e.g., tallness an dwarfness, voilet or red flowers and white flowers (Table 5.1). Mendel satisfied himself as to trud breeding nature of the variety through self-pollination. Any offspring not true to the form of th trait was eliminated. True breeding plants were then used for the next ster^ They formed the parer (P) generation.