The following figure shows that gel electrophoresis can be used to separate repetitive DNA sequences.Gel electrophoresis separates DNA fragments because ________.
A) double-stranded moves slower than single-stranded DNA
B) of ratios of guanine to cytosine
C) the DNA fragments have different lengths
D) of the salt concentration in the gel matrix

Question

The following figure shows that gel electrophoresis can be used to separate repetitive DNA sequences.Gel electrophoresis separates DNA fragments because ________. 
A) double-stranded moves slower than single-stranded DNA 
B) of ratios of guanine to cytosine 
C) the DNA fragments have different lengths 
D) of the salt concentration in the gel matrix

Quizplus · Accepted Answer

Gel electrophoresis separates DNA fragments based on their size, with smaller fragments moving faster through the gel than larger fragments. Repetitive DNA sequences may have different lengths, allowing them to be separated by gel electrophoresis. The other options are not accurate explanations for how gel electrophoresis separates DNA fragments.

The Following Figure Shows That Gel Electrophoresis Can Be Used