Which of the following is true of dna only?
only dna can be read by trna molecules during replication.
only dna contains adenine, guanine, and cytosine in a sequence.
only dna has a single stranded structure.
only dna serves as the master copy of an organism's genetic code.

In order to study genetic mutations, scientists must study genetic material. which statement describes the genetic material scientists are most likely studying? a) they study alleles that contain chromosomes, which are rna.b) they study alleles that contain genes, which are chromosomes.c) they study chromosomes that contain genes, which are dna segments.