The p53 gene is a tumor that suppresses a protein commonly called protein 53. The gene is important in regulating the cell cycle and suppressing tumors. Which of the following is an example of a cellular response to a mutation to the p53 gene? A mutation to the p53 gene will result in excessive cell growth and division.
A mutation to the p53 gene will not cause any changes to the signal transduction pathway.
A mutation to the p53 gene will immediately stop the signal pathway.
A mutation to the p53 gene will change the relay molecules but will elicit the same response.

Need will mark ! which features are created by groundwater erosion and deposition? check all that apply. a. stalagmitesb. sinkholesc. rillsd. stalactites e. gullies f. rivers

What is thought to have caused the mass extinction at the end of the cretaceous period?

Keeping in mind the life cycle of bacteriophages, consider the following problem: during the reproductive cycle of a temperate bacteriophage, the viral dna inserts into the bacterial chromosome where the resultant prophage behaves much like a trojan horse. it can remain quiescent, or it can become lytic and initiate a burst of progeny viruses. several operons maintain the prophage state by interacting with a repressor that keeps the lytic cycle in check. insults (ultraviolet light, for example) to the bacterial cell lead to a partial breakdown of the repressor, which in turn causes the production of enzymes involved in the lytic cycle. as stated in this simple form, would you consider this system of regulation to be operating under positive or negative control?