Concept 33 Genes can be turned on and off.
In our animation, we called the product of the i gene the inhibitor, but Jacob, Monod, and most textbooks call it the repressor.
How do scientists come up with names for genes?
DNA is packaged in a chromosome.
Higher cells incorporate an ancient chromosome.
Some DNA does not encode protein.
Some DNA can jump.
Genes can be turned on and off.
Genes can be moved between species.
DNA responds to signals from outside the cell.
Different genes are active in different kinds of cells.
Master genes control basic body plans.
Development balances cell growth and death.
A genome is an entire set of genes.
Living things share common genes.
DNA is only the beginning for understanding the human genome.