Genetics in Our Lives: Dna

The video tutorial explains DNA, its structure, and its components. DNA resembles a twisted ladder, known as a double helix, with rungs formed by nitrogen base pairs. There are four types of nitrogen bases, and their sequence determines genes and the genetic code. Scientists are studying the genetic code to understand diseases and hereditary traits.

Describe the appearance of a DNA molecule.

In what ways do scientists hope to use the understanding of the genetic code?