Which of these is responsible for catalyzing the formation of an rna primer? replication of dna. each letter marks a definite structure. letter a marks a part of the double-stranded dna. letter b marks the enzyme that cuts bonds between the two strands of dna. letter c marks structures attached to a single strand. these structures prevent linking of the dna strands. letter d marks a structure that binds to a dna strand and initiates synthesis. letter e marks one of the identical components of a dna strand. which of these is responsible for catalyzing the formation of an rna primer? replication of dna. each letter marks a definite structure. letter a marks a part of the double-stranded dna. letter b marks the enzyme that cuts bonds between the two strands of dna. letter c marks structures attached to a single strand. these structures prevent linking of the dna strands. letter d marks a structure that binds to a dna strand and initiates synthesis. letter e marks one of the identical components of a dna strand. e a d b c