One feature of all DNA molecules is that they are: a. single-stranded b. double-stranded c. triglycerides d. disaccharides
Biology · Middle School · Tue Nov 03 2020
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The correct answer is: b. double-stranded
DNA molecules are composed of two long strands that coil around each other to form a double helix structure. Each strand consists of a sequence of nucleotides connected by sugar-phosphate backbones. The two strands are connected by hydrogen bonds between complementary nitrogenous bases: adenine (A) pairs with thymine (T), and cytosine (C) pairs with guanine (G). This double-stranded structure is a fundamental characteristic of DNA, essential for its stability and function in storing genetic information.