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E.coli genome constist of a SINGLE circular chromosome containing 4.6 Mb i.e. 4.6 X 10^6 bases.

The weight of one base is 330 daltons and 1 Dalton is equal to 1.661^-24g. there fore the CHROMOSOMAL WEIGHT (in micrograms) is 660 X 1.661 X 10^-18 X 4.6 X 10^6

which is equal to 5.043 X 10^-9 MICROGRAMS.

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13y ago

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