Complex sentence: NHEJ uses a variety of enzymes to directly join the DNA ends in a DSB while in HDR, a homologous sequence is utilized as a template for regeneration of missing DNA sequence at the break point.
Split into simpler sentences: NHEJ uses a variety of enzymes to directly join the DNA ends in a DSB while in HDR. A homologous sequence is utilized as a template for regeneration of missing DNA sequence at the break point.