What is the difference between canonical form and standard form which form is preferable with gates?

Avariable definition defines the name of a variable that will be used in a program, as well as

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

Font size, font style, and are all aspects of character formatting.