Which type of variation would be most detectable by gel electrophoresis if the differences in the DNA were between two recognition sites for a restriction enzyme?
A) SNPs
B) PCRs
C) HMRs
D) STRs
E) Transitions

Question

Quizplus · Accepted Answer

Short Tandem Repeats (STRs) are the most detectable by gel electrophoresis if the differences in the DNA were between two recognition sites for a restriction enzyme. STRs are stretches of DNA that contain repeating patterns of two to six nucleotides, and the number of repeats can differ between individuals. This variation can be visualized on a gel as differences in the size of the fragments produced by the restriction enzyme digestion. SNPs (A), PCRs (B), HMRs (C), and transitions (E) are not directly related to the differences in recognition sites for restriction enzymes and are not typically detected by gel electrophoresis in the same way as STRs.

Which Type of Variation Would Be Most Detectable by Gel