Determine the nature of the expression of the lacZYA genes, represented by L, and label each genotype as constitutive, inducible, or no transcription in the presence of lactose. Assume that all promoters are wild type.

Which property is used to identify the origin of an igneous rock? color density hardness crystal size

Which must be kept in mind when determining if an explanation is correct? check all that apply. which must be kept in mind when determining if an explanation is correct? check all that apply.

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.