Question

How many true breeding pea plant varieties were selected by Mendel?

• A. $14$
• B. $7$
• C. $21$
• D. $2$

Answer 1

The correct option is A $14$

1. A true breeding line refers to the plant that has undergone continuous self-pollination and showed stable trait inheritance and expression for several generations.
   
2. Mendel (father of genetics) selected 14 true-breeding pea plant varieties, as pairs, which were similar except for one character with contrasting traits.
   

So, the correct answer is '14'.