DNA elements that prevent the spreading of heterochromatin into adjacent euchromatic regions are called:
A)enhancer blocking elements.
B)euchromatin buffers.
C)barrier insulators.
D)barrier buffers.
E)barrier-blocking elements.

Question

Quizplus · Accepted Answer

These DNA elements are known as barrier insulators because they act as barriers or obstacles to prevent the spread of heterochromatin into adjacent euchromatic regions. They are sometimes also referred to as boundary elements or insulator sequences. Choices A, B, D, and E are not accurate descriptions of these elements.

DNA Elements That Prevent the Spreading of Heterochromatin into Adjacent