What is the name of the enzyme that connects DNA fragments?

This is DNA polymerase. This enzyme plays an important role in the structure of the DNA chain. He connects its parts together. But DNA strands don’t always look like that. During protein synthesis, certain parts of the DNA unwind and detach. This happens at the stage of transcription. Then mRNA is created, which transfers information about the need for the synthesis of a certain protein to the ribosome. After the end of transcription, the DNA returns to its normal structure. The very assembly of proteins from amino acids occurs at the stage of translation.