Book : Botany
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Posted by: CHELSEA
posted by
Writer CHELSEA

DNA

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DeoxyriboNucleic Acid : Long-term storage of genetic information transmission of genetic information to make other cells and new organisms. DNA is a double-stranded molecule consisting of a long chain of nucleotides. Composition of deoxyribose sugar phosphate backbone adenine, guanine, cytosine, thymine bases. DNA is self- replicating. The C-H bonds in DNA make it fairly stable, plus the body destroys enzymes that would attack DNA. The small grooves in the helix also serve as protection, providing minimal space for enzymes to attach. 

DNA is susceptible to UV damage. DNA is found in the nucleus of a cell and in mitochondria. Adenine links to thymine (A-T) and cytosine links to guanine (C-G). The blueprint of biological guidelines that a living organism must follow to exist and remain functional. Medium of long-term, stable storage and transmission of genetic information. The helix geometry of DNA is of B-Form. DNA is protected in the nucleus, as it is tightly packed. Purine and Pyrimidine bases are in equal in number. DNA is spirally twisted to produce a regular helix. It is long lived.


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