DNA is shaped like a twisted ladder. What do we call this shape/structure? pick the the correct answer. 1.Single Strand,
2. Double Strand,
3.Double Helix,
4. Chromosome,​

The answer is 3. Double Helix.

it's     c       this is a cell (b) with a nucleus (c) containing dna (a). the dna is organized into chromosomes (d). a section of the chromosome that codes for a trait is called a gene (e).

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link: