Respuesta :

Answer:

The double helix is a description of the molecular shape of a double-stranded DNA molecule. ... Each DNA strand within the double helix is a long, linear molecule made of smaller units called nucleotides that form a chain.

Answer:

Explanation:

The double helix describes the appearance of double-stranded DNA, which is composed of two linear strands that run opposite to each other, or anti-parallel, and twist together. Each DNA strand within the double helix is a long, linear molecule made of smaller units called nucleotides that form a chain.