DNA is double-stranded meaning there are 2 polynucleotides alongside each other, they are also antiparallel so they run in opposite directions.
The structure of the DNA makes it well suited for its job of Storting and expressing genetic information.
The double-stranded helix is good for providing stability and protecting the bases
The long molecule as it can store lots of informnation
While it being coiled is good to as its compact so it stores a lot of information in a small space
Having 4 bases allows the DNA to be encoded and stored
Having hydrogen bonds allows it to be strong and stable
Being double stranded allows it to replicate semi-conservatively.
Complementary base pairing allows identical copies to be made.
Weak hydrogen bonds between basees allow an easy streams separation for replication.
2 complementary strands mean that there are 2 copies of information, which is useful for repair, copying and error checking.
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