Question

why did gregor mendel choose to use purebred plants in his experiments?
o they reproduce sexually.
o they exhibit only one form of a trait.
o they have a variety of traits.
o they reproduce asexually.

Explanation:

Purebred plants are homozygous for a particular trait. This means that when they self - pollinate (or are crossed with another purebred of the same type), they will always produce offspring with that same trait. Gregor Mendel wanted to study the inheritance of traits. If he used non - purebred (heterozygous) plants, the results of his crosses would be more complex and less predictable. By using purebred plants, he could clearly observe how traits were passed from one generation to the next. For example, if he had a purebred tall plant (TT) and a purebred short plant (tt), he could be sure of the genetic makeup of the parent plants. When he crossed them, all the offspring would be Tt (heterozygous) and he could then study how the trait of height was expressed in the next generation.

Answer:

They exhibit only one form of a trait.