What contributed to Mendel's success?
I. Selection of pure line pea varieties.
II. Knowledge of history.
III. Selecting one character at a time.
IV. Statistical analysis and mathematical logic.
Choose the correct option.
Reasons for Mendel's success were:
(a) Selection of pure line pea varieties
(b) Selecting one character at a time.
(c) Use of statistical analysis and mathematical logic.