Which statement best describes the density of the outer planets? all the outer planets have low density. the outer planets are denser than the inner planets. saturn is dense, but the other outer planets are not. uranus and neptune are dense, but jupiter and saturn are not.

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