[" The ratio of light and "],[" hybrid DNA molecules "],[" after two generations of "],[" replication in "^(14)" N medium "],[" (according to Meselson "],[" and Stahl "s" exp) "" < "]

" During amplification of DNA molecule through "PCR" ,after "10" generation of replication cycles the number of formed DNA molecules is "

A dsDNA found in E. Coli has N^(15) labeled nitrogen bases. This organism was provided with N^(14) based nitrogen bases for the replication process . The two new DNA molecules synthesized after one round of replication in the N^14 based medium . Which of the following options correctly describes the comparison between parent DNA and daughter DNA ?

If 50 heavy DNA (N^(15)) molecules are replicated 2 times in N^(14) medium, what is obtained?

A normal DNA molecule is continuously replicate in N^(15) medium than what is the % of lighter DNA in 4^(th) generation.

If a completely radioactive double - stranded DNA molecule undergoes two rounds of replication in a non - radioactive medium, what will be the radioactive status of the four resulting molecules ?

Assuming that 50 heavy (i.e., containing N^(15) ) DNA molecules replicated twice in a medium containing N^(14) we expect

Answer the following questions based on Meselson and Stahl's experiment of E. coli : (a) Write the name of the chemical substance used as the only source of nitrogen in the experiment. (b) Why did they allow the synthesis of the light and the heavy DNA molecules in the organism ? (c ) How did they distinguish the heavy DNA molecules from the light DNA molecules? Explain. (d) Write the conclusion the scientists arrived at, at the end of the experiment.

If DNA replication is conservative, what woul be expected distribution of labelled DNA molecule after two generations.