From Ask a Biologist site, story about monsters that explains how DNA acts as a code.
From Sanger centre, these include a DNA origami model.
“Hip Hip Hooray for DNA”
From ABPI – this is a KS4 resource but this page has a nice zooming into DNA animation as well as the “scary baby” who explains eye colour inheritance.
Interactive mouse breeding exercise – using knowledge about genetics
Rosalind Franklin vs Watson and Crick – rap battle video!