Question

The "rungs" of the DNA ladder are made of what?

Answer 1

The "rungs" of the DNA strand are made up of nitrogenous bases.

Explanation:

The "rungs" of the DNA strand are made up of nitrogenous bases which include

• `color(blue)"Guanine (G)"`

• `color(green)"Cytosine (C)"`

• `color(pink)"Adenine (A)," and`

• `color(orange)"Thymine (T)"`

`color(white)(--------)color(blue)"G"` pairs with `color(green)"C"`
`color(white)(--------)color(pink)"A"` pairs with `color(orange)"T"`

By pairs I mean forms hydrogen bonds, which are a type of intermolecular force of attraction and one of the strongest of them all.