How many hydrogen bonds are between guanine and cytosine?
Guanine (G) and cytosine (C) form three hydrogen bonds with each other
Guanine (G) and cytosine (C) form three hydrogen bonds with each other.
Hydrogen bonding is an important type of intermolecular force that occurs between a hydrogen atom bonded to an electronegative atom (in this case, nitrogen) and another electronegative atom (in this case, oxygen) present in certain molecules.
In DNA, the pairing of nitrogenous bases forms the basis of the double helix structure. Adenine (A) always pairs with thymine (T) through two hydrogen bonds, while guanine (G) pairs with cytosine (C) through three hydrogen bonds.
The three hydrogen bonds between G and C contribute to the stability and specificity of DNA. The additional hydrogen bond formed in the G-C pairing increases the strength of the bond compared to the A-T pairing, thus contributing to the overall stability of the DNA molecule.
This pairing and hydrogen bond formation between complementary bases is crucial for the accurate replication and transmission of genetic information during cellular processes such as DNA replication and protein synthesis.
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