Observations of light show that bodies in the universe display a red shift. This red shift suggests that the universe is .
Question 3 options:

expanding

compressing

spinning

colorful

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