EASY REVISION AQA A-Level Biology 3.4.1 DNA, genes & chromosomes

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This episode focuses on topic 3.4.1 (DNA, genes & chromosomes) of the AQA A-Level Biology specification. First, I will compare eukaryotic and prokaryotic DNA, and then look at the DNA in eukaryotic nuclei in more detail. I will define "gene" and "locus" and cover how the genetic code is universal, degenerate & non-overlapping. Finally, I will cover non-coding DNA.

00:00 Introduction
00:11 specification overview
01:02 eukaryotic vs prokaryotic DNA
01:51 DNA in the nucleus of a eukaryotic cell
03:16 genes & loci
04:22 the genetic code is universal, degenerate & non-overlapping
05:28 non-coding DNA
06:53 specification round-up