How do fluorescent dyes in ddNTPs aid in identifying specific nucleotides during Sanger sequencing?

• A. Fluorescent dyes stabilize the DNA fragments during gel electrophoresis.
• B. Fluorescent dyes prevent the degradation of DNA fragments.
• C. Each ddNTP is labeled with a unique fluorescent dye corresponding to a specific nucleotide.
• D. Fluorescent dyes increase the speed of DNA replication.

Answer: (C)