Two NotI restriction enzymes cleave DNA on opposite sides of the Dbm gene in a species of yeast. A molecular probe for Dbm detects a DNA restriction fragment of 8.5 kb in organisms that are wild type at Dbm. In a strain of yeast, a Ty1 transposable genetic element mutates dbm. Ty1 is 5.6 kb in length.
In haploid yeast with this dbm mutation, what is the length of the restriction fragment detected by the probe following NotI digestion?
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