Question

state true or false nitrogen bases in opposite strands of DNA helix are joined by ionic bonds​

Answer 1

hydrogen bonds

The nitrogenous bases on the two strands of DNA pair up, purine with pyrimidine (A with T, G with C), and are held together by weak hydrogen bonds. Watson and Crick discovered that DNA had two sides, or strands, and that these strands were twisted together like a twisted ladder -- the double helix

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Answer 2

Answer:

False

Explanation:

DNA helix are not joined by ionic bonds