Basic Principles Of Biotechnology - Study Mode

[#46] Broker, Chow, Roberts and P. Sharp hybridized mRNA from adenovirus to denatured adenovirus DNA and examined the resultant duplex molecules by electron microscopy. Which of the following did they observe?
Correct Answer

(D) On one strand there were looped out regions of single-stranded DNA

[#47] If a mutation occurred in the phosphorylation site in the CTD domain of RNA polymerase II, which of the following outcomes would be observed?
Correct Answer

(B) Transcription of mRNA would not occur

[#48] A microorganism when viewed under a compound microscope with objective of 40X and eye piece of 10X magnification measured 400μ in length. The same microorganism when viewed under a dissecting microscope with 10X lens, would measure
Correct Answer

(B) 10μ

[#49] Which of the following technique is used to inactivate a gene by altering the DNA encoding it?
Correct Answer

(A) Homologous recombination

[#50] Gene conversion is observed
Correct Answer

(C) During meiosis, the expected 2 : 2 ratio of alleles is replaced with a 3 : 1 ratio