Farmers and supermarkets agree that green beans are bought more frequently than yellow beans - VCE - SSCE Biology - Question 27 - 2019 - Paper 1

Selective breeding is a method used to enhance desired traits in plants and animals. In this case, to ensure the production of only green beans, the farmer would choose to breed plants that exhibit the green bean trait. Over time, through selective breeding, the prevalence of the trait can be increased in the population, leading to a consistent production of green beans.