1. in a beetle species the red color is dominant over the white color. what is the genotype of any red beetle resulting from this species? 1points a red and white alleles present on one chromosome b red and white alleles present on two chromosomes c a red allele present on both homologous chromosomes d a red allele present on at least one of two homologous chromosomes 2. genetic engineering has led to genetically modified plants that resist insects, pests and bacterial and fungal infections. which outcome would most likely be a reason why some scientists recommend caution in planting genetically modified plants? 1points a improved agricultural yield and profit b increased genetic variation and diversity c reduced pesticide and herbicide use d unplanned ecosystem interactions 3. in north america the brown bear mates in the late winter, and the black bear in late summer. even though their species overlap they do not mate with each other. what most likely prevents these two species from interbreeding? 1points a behavioral isolation b geographic isolation c habitat isolation d temporal isolation