Over the last several decades, the scientific community has gathered a large amount of information regarding genetics and genetic variation. What is a main source that leads to increased genetic variation?

the answer is Recombination :)

Explanation:

(i just took the test so i know its right)

a

explanation:

many plants naturally reproduce this way, but it can also be induced artificially. horticulturalists have developed asexual propagation techniques that use vegetative plant parts to replicate plants. success rates and difficulty of propagation vary greatly. monocotyledons typically lack a vascular cambium and therefore are harder to propagate.