Question

Two strands of DNA are held together by ______.

Answer 1

Strands of DNA:

1. Humans and nearly all other species carry their genetic information in DNA, also known as deoxyribonucleic acid.
2. The DNA of an individual can be found in almost all of their cells.
3. Purines and pyrimidines are nitrogenous bases found in DNA.
4. A hydrogen bond connects purine with a pyrimidine.
5. Two hydrogen bonds connect adenine to thymine, while three hydrogen bonds connect guanine and cytosine.

Final answer: Two Strands Of DNA are held together by hydrogen bonds.