Investigators examined the expression of transporter mRNA and protein produced in zebrafish homozygous for each of the alleles and obtained the results summarized here (+ = present, − = absent). Does the allele associated with light color appear to be altering transcription or translation? Why? mRNA Protein Dark-colored zebrafish allele + + Light-colored zebrafish allele − − Source: R. L. Lamason et al. 2005. Science 310: 1782−1786. Match the terms in the left column to the appropriate blanks in the sentences on the right. Terms can be used once, more than once, or not at all.