Annie needs to provide a form field that will allow users to select from a predefined list of options but without the ability to add their own options.
which option should she use?
rich text
plain text
drop-down list
combo box

Which best describes the role or restriction enzymes in the analysis of edna a. to break dna into fragments that vary in size so they can be sorted and analyzed b. to amplify small amounts of dna and generate large amounts of dna for analysis c. to purify samples of dna obtained from the environment so they can be analyzed d. to sort different sizes of dna fragments into a banding pattern that can be analyzed