Question

mendel was a careful researcher who studied the inheritance of certain traits in garden peas. what are some of the research practices mendel used? choose all that apply.
a he crossed true - breeding pea plants.
b. he allowed eggs to be fertilized only by self - pollination.
c. he analyzed his data mathematically.
d he controlled variables by studying one or two traits at a time.

Explanation:

• Option A: Mendel used true - breeding pea plants for his crosses. True - breeding plants have consistent traits when self - pollinated, which was crucial for his experiments.
• Option C: He analyzed his data mathematically. By counting the number of offspring with different traits (e.g., tall vs. short, yellow vs. green seeds), he was able to formulate laws of inheritance.
• Option D: He controlled variables by studying one or two traits at a time. This allowed him to clearly observe the patterns of inheritance for each trait without the confusion of multiple, interacting traits.

Option B is incorrect because Mendel also performed cross - pollination (not just self - pollination) to study inheritance.

Answer:

A. He crossed true - breeding pea plants, C. He analyzed his data mathematically, D. He controlled variables by studying one or two traits at a time.