The diagram shows a plant cell with arrows indicating the exchange of products and reactants in photosynthesis. The chart lists five statements that can be used to describe the diagram

Which statement best describes the relationship between an allele and a gene? question 1 a. an allele is a variation of a gene that can be expressed as a phenotype. b. an allele is the part of a gene that attaches to messenger rna molecules. c. an allele is a segment of a dna molecule that controls replication of a gene.