Indicate whether the following statements about DNA electrophoresis are true or false. Write true or false in each blank.
_____ Polyacrylamide gels are used to separate DNA fragments.
_____ The separation of DNA fragments is based on their size.
_____ DNA standards are not used in most electrophoretic runs.
_____ Each band on the gel contains millions of DNA fragments.
_____ DNA fragments move down the gel because their net charge is negative.
_____ The DNA fragments of highest molecular weight will be found at the
bottom of the gel.
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