Importance of Double Helix DNA Structure

Importance of Double Helix DNA Structure

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Gene expression involves transcribing only one strand of DNA molecule. So i was wondering what are some biological advantages of the double stranded DNA?

The structure allows for the DNA to be tightly packed into chromosomes. It also provides an extremely stable backbone with the negatively charged phosphates pointing to the outside of the molecule. This charge aids in the attachment of other molecules to the strand of DNA.

DNA double helix allows it to be stable and it won't easily destroyed.

The most important role of this peculiar double helix structure of DNA is to facilitate replication… in preparation of cell division each of the 2 strands acts as a template thus facilitating precise copying of genes… in the Nature(1953), Watson & Crick also suggested that " It has not escaped our notice that the specific pairing we have postulated immediately suggests a possible copying mechanism for the genetic material"…

Also, the extremely stable structure doesn't allow DNA to mutate rapidly, unlike RNA… thus converting it into an "efficient information storage structure"…

& lastly this double helix structure is also resistive against extreme physical changes… as is evident from Griffith's experiment, where the heat-killed bacteria had their DNA intact…

Also try this link- "Genetic Implications of the Structure of Deoxyribonucleic Acid"- Watson & Crick… as it always helps to learn from the very masters of DNA structure;)

Watch the video: Die Bedeutung der 3, 6 und 9 (February 2023).