How did Rosalind Franklin contribute to our understanding of DNA?  

A bacterial gene initiates transcription, but from random points on the DNA. Which of the following  proteins most likely is missing from the reaction?  

A rho-independent transcription terminator includes:    

Suppose that some cells are grown in culture in the presence of radioactive nucleotides for many generations so that both strands of every DNA molecule include radioactive nucleotides. The cells are then harvested and placed in new medium with nucleotides that are not radioactive so that newly synthesized DNA will not be radioactive. What proportion of DNA molecules will contain radioactivity after three rounds of replication?    

Which is not true for the elongation of transcription in bacteria :  

Suppose that Hershey and Chase found that phage contained 32P label was absent from infected coli. Furthermore, suppose they found 35S present in the infected E. coli. They would have concluded:  

The following table shows Chargaff’s data that demonstrates base composition of DNA from different biological sources. Source A T G C E. coli 26.0 26.9 24.9 25.2 Yeast 31.3 32.9 18.7 17.1 Sea urchin 32.8 32.1 17.7 18.4 Rat 28.6 28.4 21.4 21.5 Human 30.3 30.3 19.5 19.9  Which of the following is NOT a general conclusion that is supported by these data?

You are a research assistant in a lab that studies nucleic acids. Your advisor gave you four tubes for analysis. Each of these tubes differs in its contents by the source of its nucleic acids: mouse cytoplasm (single-stranded RNA), yeast nuclei (double-stranded DNA), rotavirus (double-stranded RNA), and parvovirus (single-stranded DNA). The approximate nucleotide base composition of each sample is given in the table below.   Tube A C U T G 1 32 17 0 32 17 2 34 16 15 0 35 3 30 46 0 10 23 4 33 16 25 0 17 Which tube most likely contains yeast nuclei?

Telomerase uses _____________ to synthesize new DNA.    

A bacterial gene initiates transcription, but from random points on the DNA. Which of the following  proteins most likely is missing from the reaction?