In what types of habitats do mammals live? choose the best answer. a. in the ocean b. only on land c. in all habitats d. in burrows

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.