In translation, a cytosine in tRNA pairs opposite with Uracil
True
False

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.

What does the positioning of transcription factors determine?

18. which statement about cancer is true?