Which is a true statement about genetic diversity? a. Genetic resistance to pests and diseases can be increased by crossing a plant with ancestral varieties b. Genetic engineering technology is used to increase genetic diversity by creating new species with synthetic genes I want to say B, but I am uncertain because of the "synthetic" part. For A, wouldn't genetic resistance decrease if ancestral varieties are involved? I mean, aren't the pests and bacteria already familiar with the ancestor plants? Thanks.