A major reason E.coli can replicate in 20 minutes at optical conditions is becau

Question

A major reason E.coli can replicate in 20 minutes at optical conditions is because of... A. Polysomes B. the presence of thousands of ribosomes. C. their ability to use several types of sugars as a carbon source (i.e. glucose and lactose) D. they only have three polymerases to work with. E. All of the above or none of the above. All of the following are examples of gene assortment except for A. Insertion Mutation B. Deletion Mutation C. Nonsense Mutation D. Inversion Mutation E. Duplication Mutation In the Sanger method of DNA sequencing, what causes the termination of chain elongation? A. The incorporation of an incorrect DNA nucleotide. B. Denaturation of the double-stranded test fragments. C. A 3'-Hydrogen bond. D. When the DNA polymerase encounters a stop codon. E. When denaturation causes the primers to disassociate from the strands.

Explanation / Answer

12) The major reason for the faster replication of E.coli in 20 minutes at optimal growth conditions is that new round of replication starts while one round of replication is running. It actually starts with initiation and end with termination with the help of replisomes. The replisomes find origin of replication faster and reach termination sequence also. So here the answer is E ( All of the above or none of above).

13) nonsense mutation is not a gene assortment(c).

14) The incorporation of an incorrect DNA nuleotide causes the termination of chain rlongation(a).

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