Examine the Data Given for a Set of Endonuclease Digests

Multiple Choice

Examine the data given for a set of endonuclease digests of a 1000 bp DNA fragment.Then choose the restriction sites for Enzyme #2 on the restriction map shown.The restriction map displays all sites for both enzymes. Digestion with Enzyme #1 produces fragments of 200 bp and 400 bp.
Digestion with Enzyme #2 produces fragments of 200 bp,300 bp and 500 bp.
Simultaneous digestion with both enzymes yields fragments of 100 bp,200 bp and 300bp

A) Sites W and Y
B) Sites X,Y and Z
C) Sites X and Z
D) Sites W and X