Question

in his study of pea plants, gregor mendel used which method to produce offspring?
cross - pollination, by using parents that had identical traits
cross - pollination, by using parents that had different traits
self - pollination, by using one parent
random pollination, by using both identical - and different - trait matings

Explanation:

Mendel's experiments involved cross - pollination. He wanted to study the inheritance of traits, so he used parents with different traits. For example, he crossed tall pea plants with short pea plants. Cross - pollination between parents with different traits allowed him to observe how traits were passed on. Self - pollination (using one parent) would not show the inheritance patterns as clearly for trait variation. Random pollination is not a specific method he used in a controlled sense for his key experiments. Cross - pollination with identical - trait parents would not give new trait combinations for study.

Answer:

cross - pollination, by using parents that had different traits