A question
What is DNA?
A calm, true answer. Then, if the wondering keeps going, the whole episode.
The short answer
A set of instructions for building and running a living thing, written in an alphabet of only four letters: A, T, C and G. Almost every cell in you carries a complete copy.
Stretched out, the DNA from a single one of your cells would be about two metres long, folded small enough to be invisible. You got half your recipe from each parent, and you share a surprising amount of it with a banana.
Go deeper tonight
Genes & DNA: What Makes You... You
The full episode, in one calm voice, with nothing that startles.
0:00
8:30
Sleep timer
Read the guide for this one in the morning.
This connects to
One idea turns up in many different nights. Follow one and the library starts to join up.