Reading Chapter 13
Identify the letter of the choice that best completes the statement or answers the question.
____ 1. A stretch of DNA that varies among individuals is called a(an)
____ 2. What kind of cell (or cells) are used to make animal clones?
____ 3. Knowing the sequence of an organismís DNA allows researchers to
____ 4. Suppose a restriction enzyme recognizes the six-base sequence
in a double strand of DNA. Between which two nucleotides on each strand would the enzyme have to cut to produce a fragment with sticky ends that are four bases long?
____ 5. In E. coli, the lac operon controls the