What is the role of the Sigma (s) factor in E. coli transcription?

Which of these DNA alterations can be repaired by photolyase in prokaryotes?

These mutations are likely to have the consequences described Repair of a double-strand break by non-homologous end joining results in a small deletion  

What kind of cells are infected by HIV?

Which of the following ‘omes can be predicted as indicated?

The activities of homeodomain transcription factors in controlling development are based on rearrangement of nucleosomes

Which of the following statements about standard deviation is true?

The following enzymes are actually RNA molecules with catalytic (enzymatic) activity: Reverse transcriptase

Polycistronic mRNAs are:

The following enzymes are actually RNA molecules with catalytic (enzymatic) activity: Endonuclease RNase P (tRNA processing)