each unit of dna, known as a nucleotide , consists of a sugar-phosphate backbone attached to one of four nitrogenous bases. in a double-stranded helix, question blank 1 of 2 answer only pairs with thymine and question blank 2 of 2 answer only pairs with cytosine.

Respuesta :

In a double-stranded helix, adenine pairs with thymine and question guanine pairs with cytosine.

A double-stranded helix: what is it?

As it relates to genomics, the term "double helix" is used to describe the actual makeup of DNA. Two linked strands that wind around one another to resemble a twisted ladder in a helix-like shape make up a DNA molecule. Deoxyribose and phosphate groups alternately form the backbone of each strand.

The molecule that carries the genetic information necessary for an organism's growth and operation is called deoxyribonucleic acid, or DNA for short. DNA is made up of two linked strands that resemble a twisted ladder by winding around one another; this structure is called a double helix.

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