The fragments of chromosomes split by restriction enzymes
A)have fused ends.
B)have specific sequences of nucleotides and often have sticky ends.
C)each have the same number of nucleotides as the original chromosome.
D)form a circle.
E)have modified DNA nucleotides.

Question

Quizplus · Accepted Answer

Restriction enzymes cut DNA at specific sequences, leaving sticky ends that can base pair with complementary sticky ends on other fragments. This is the basis for DNA cloning and manipulating DNA in the laboratory. The fragments do not necessarily have the same number of nucleotides as the original chromosome, and they may or may not form circles depending on the type of restriction enzyme used and the purpose of the experiment. The DNA nucleotides themselves are not modified by the cutting process.

The Fragments of Chromosomes Split by Restriction Enzymes