What is "double helixes"

Usage examples of "double helixes".

The diamond had been salvaged from the double helixes strengthening the cable, and the blocks were actually much less valuable than the carbon filament stored underneath them- basically a kind of fancy hatch door.

The diamond had been salvaged from the double helixes strengthening the cable, and the blocks were actually much less valuable than the carbon filament stored underneath them—.

The animated amino acid double helixes began to replicate themselves, leading to a single-celled life.

Silver wires formed double helixes around both arching ovipositors, an agonizingly long task at which her brother and friends had helped.