Kaelynaj731 Kaelynaj731
  • 17-01-2018
  • Biology
contestada

How do the nitrogenous bases always pair up in a dna molecule?

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Аноним Аноним
  • 19-01-2018
Hi!

I hope this answer helps: The nitrogen bases pair up in twos: cytosine with guanine and adenine with thymine. 
Please mark me the brainliest!!

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