Read the following four statement. I. In transcription, adenosine pairs with uracil. II. Regulation of lac operon by repressor is referred to as positive regulation. III. The human genome has approximately 50000 genes. IV. Haemophilia is a sex-linked recessive disease. How many of the above statements are right?
Held on 30 Apr 2012 · Verified 9 Jul 2026.
Two
Three
Four
One
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Which of the following are the post-transcriptional events in an eukaryotic cell? A. Transport of pre-mRNA to cytoplasm prior to splicing. B. Removal of introns and joining of exons. C. Addition of methyl group at 5' end of hnRNA. D. Addition of adenine residues at 3 ' end of hnRNA. E. Base pairing of two complementary RNAs. Choose the correct answer from the options given below :
Match List I with List II: $\begin{array}{|l|l|l|l|}\hline & \text{List - I} & & \text{List - II} \\\hline \text{A}. & \text{Alfred Hershey and Martha Chase} & \text{(i)} & \text{Streptococcus pneumoniae} \\\hline \text{B.} & \text{Euchromatin} & \text{(ii)} & \text{Densely packed and dark-stained} \\\hline \text{C.} & \text{Frederick Griffith} & \text{(iii)} & \text{Loosely packed and light-stained} \\\hline \text{D.} & \text{Heterochromatin} & \text{(iv)} & \text{DNA as genetic material confirmation} \\\hline\end{array}$ Choose the correct answer from the options given below:
Who proposed that the genetic code for amino acids should be made up of three nucleotides?
Which factor is important for termination of transcription?
Histones are enriched with -
Work through every NEET UG Molecular Basis of Inheritance PYQ, year by year.