Mistake Master
Mistake Master · AP Biology · Unit 6 · Step-Through Animation
Same Book, Different Pages
You'll learnwhy cells with identical genomes become different types by expressing different genes.
A neuron and a liver cell look nothing alike, behave nothing alike, and carry exactly the same DNA — the same complete genome, gene for gene. Watch the switches get thrown, then watch the two mistakes this topic exists to kill: that each cell type has its own gene set, and that specialising throws the unused genes away. Ten short steps; press Next for each one.
one genome in every cell · what differs is which genes get read
Before you start
What you're looking at
A single zygote dividing by mitosis into four cell types, each daughter showing the same row of six gene loci.
The question
If a muscle cell and a beta cell hold identical genes, why do they do different jobs?
Step 1 / 10