Please choose the correct answer to the question: Gregor Mendel studied ratios related to traits passed from parent pea plants to offspring pea plants. Mendel used large numbers of plants to avoid "sampling error." This changed the way scientists studied genetics because it included ideas of

Answer1: nuclei and DNA. Answer2: atoms and molecules. Answer3: ecology and environment. Answer4: mathematics and probability.

Answer format: answer1/answer2/answer3/answer4
Answer: answer4