MCQS: Major difference in DNA and RNA (ribose sugar) RHO use? Best restriction and modification system(Type2) DNA ligase use? PBR322 sy related Aya tha aik. What is the general use of PCR? RT PCR general use? Paradox KY 10 mcqs thy aur in mein sy bhi 4 ya 5 Mcqs ay hovy thy SHORT: Difference between traditional Biotechnology and modern Biotechnology? What is the function of DNA ligase? LONG: Write 4 Chargaff rules and write the names of the scientists who used these rules for the structure of DNA? Write the host organism used by cosmid vectors, BACs and YACs? And also their cloning capacity?