On day 2, how did the size of the mixed population compared to either one of the single species populations? it was the same size it was larger it was smaller

Choose the best definition of allele. a. one of several possible versions of a gene, which each produce a different phenotype b. an organism that's purebred for a given trait c. the process of fertilizing a plant with pollen from another plant d. a set of genes that are located on the same chromosome and so are tightly linked