Meselson and Stahl grew bacteria in medium containing heavy nitrogen. After many cell divisions, the bacteria were removed, washed and allowed to continue growth in medium containing normal (light) nitrogen. a. In this experiment, what part of the DNA gets labeled with heavy nitrogen?
Nucleotides
It is an organic molecule made up of three basic components- a nitrogenous base, phosphate,and pentose sugar. The nucleotides are important for metabolic reactions andthe formation of DNA (deoxyribonucleic acid) and RNA (ribonucleic acid).
Nucleic Acids
Nucleic acids are essential biomolecules present in prokaryotic and eukaryotic cells and viruses. They carry the genetic information for the synthesis of proteins and cellular replication. The nucleic acids are of two types: deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). The structure of all proteins and ultimately every biomolecule and cellular component is a product of information encoded in the sequence of nucleic acids. Parts of a DNA molecule containing the information needed to synthesize a protein or an RNA are genes. Nucleic acids can store and transmit genetic information from one generation to the next, fundamental to any life form.
Meselson and Stahl grew bacteria in medium containing heavy nitrogen. After many cell
divisions, the bacteria were removed, washed and allowed to continue growth in medium
containing normal (light) nitrogen.
a. In this experiment, what part of the DNA gets labeled with heavy nitrogen?
From Meselson and Stahl's experiment we have known that DNA replication is semi-conservative.
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