What do neutrons and protons have in common? a. they both have less mass than electrons. b. they both are found in the nucleus. c. they both move around in a cloud. d. they both have the same charge. gradpoint

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.