The Reason Segmental Duplications Pose a Logistical Challenge in the Proper

Multiple Choice

The reason segmental duplications pose a logistical challenge in the proper alignment of DNA sequences is that they

A) are inherently repetitive.
B) contain large numbers of LINEs,which interfere with sequence annotation.
C) interfere with BLAST analysis.
D) are often found in areas of constitutive heterochromatin.