Biology · PRINCIPLES OF INHERITANCE AND VARIATION

Gregor Mendel conducted hybridization experiments on garden peas for how many years, and what was novel about his methodology compared to earlier biologists?

1. 7 years (1856–1863); first time application of statistical analysis and mathematical logic
2. 5 years (1850–1855); first time use of electron microscopy
3. 14 years (1860–1874); use of radioactive labeling
4. 10 years (1840–1850); discovery of chromosomes