Why is DNA called a "double helix"?
A) It has two strands of nucleotides twisted around each other.
B) It has two strands of nucleotides,folded back and forth like an accordion.
C) It has helical bases,arranged together in complementary pairs.
D) It has four strands of nucleotides bound together with sugars.
E) It has two chromosomes,linked and twisted together.
Correct Answer:
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