A length of DNA is shown below with the vertical lines labeled 1-3, representing restriction sites. Only restriction site 2 is polymorphic. What are possible band sizes on a Southern blot if the probe hybridizes to region X?
A. 2 kb
B. 2 kb, 5 kb
C. 2 kb, 3 kb
D. 2 kb, 3 kb, 5 kb
B
Biology & Microbiology
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