In prokaryotes, the predominant site for control of gene
expression is the
(1) transcription initiation
(2) processing level
(3) transport of mRNA
(4) translational level
| 1. | Genes completely determine traits regardless of environment |
| 2. | Environment overrides genetic control in all cases |
| 3. | Genes provide potential while environment influences actual expression |
| 4. | Gene-environment interaction is insignificant in trait determination |
Which of the following is an example of genetic regulation?
1. E. coli increases expression of beta-galactosidase in response to lactose in the growth medium.
2. The cells in a developing fetus synthesize different proteins depending on the stage in development.
3. Brain cells produce a different set of proteins than muscle cells.
4. All of the above are examples of genetic regulation.