Immediately after dna replication a dna repair mechanism scans the dna for incorrect base pairs. upon which feature of the dna molecule does the repair mechanism rely to indicate incorrect bases?

The answer is proofreading feature of DNA polymerase.  As the DNA polymerase III replicates DNA, it has a proofreading mechanism in one of the subunits of the holoenzyme. This subunit detects a bad conformation in the double helix when the wrong base pair is placed. In this case, the DNA polymerase III backs up a bit and waits for the exonuclease to nick out the misplaced base.

as the gila monster consumes the eggs or young of the desert cottontail and gambel's quail, thus its main food supply is only accessible for a restricted time duration every year. however, for this, the gila monsters exhibit three adaptations, which elevate their survival rate in the desert condition.  

first, is that they possess huge bodies, and can consume greater concentrations of food during a small period. secondly, they require to feed infrequently as they can accumulate fat in their tails. ultimately, their rate of metabolism is very low, so that they can burn their reservoirs of fat gradually.