Answer:
the double helix of dna is, like its name, implies, in the shape of a helix which is essentially a three-dimensional spiral. the double comes from the fact that the helix is made of two long strands of dna that are intertwined—sort of like a twisted ladder.
Explanation:
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Answer:
I think the answer will be number A
Explanation:
frequency= velocity/ wavelength
= 340/1.36
=250
