Question

What forms the double helical structure?

Answer 1

Ello user !!!!!!!!

Here is your answer,

===============================================

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.

===============================================

HOPE THIS HELPS YOUU :)

AND STAY BLESSED.

Answer 2

Structure of the Double Helix

Double helix is the description of the structure of a DNA molecule. A DNA molecule consists of two strands that wind around each other like a twisted ladder. Each strand has a backbone made of alternating groups of sugar (deoxyribose) and phosphate groups. Attached to each sugar is one of four bases: adenine (A), cytosine (C), guanine (G), or thymine (T). The two strands are held together by bonds between the bases, adenine forming a base pair with thymine, and cytosine forming a base pair with guanine.