Molecular Basis...

What is the relationship between the nucleotide triplets and the amino acids called?

The semi dwarf wheat varities are develop from the introduction of dwarf gene.

Matthew Meselson and Franklin Stahl grew E. coli(doubling time is $$20$$min) in medium containing $$^{15}NH_4Cl$$ for many generations. Then the E. coli was transferred to medium containing $$^{14}NH_4Cl$$. After $$40$$ minutes, the cells were harvested and DNA was extracted and subjected to cesium chloride density gradient centrifugation. The proportion of light and hybrid DNA densities will be.

Suppose evolution on earth has occurred in such a way that there are 96 amino acids instead of 20 and DNA has 12 different types of nitrogen bases. DNA synthesis however occurs in the same way as today. The minimum number of bases per DNA codon would be 

Find out the right combination of primers in a PCR to amplify the DNA product

In an in vitro translation experiment, poly(UC) RNA template produced poly(Ser-Leu), while poly(AG) RNA template produced poly (Arg-Glu) polypeptide. Which one of the following options represents correct interpretations of the codons assignments for Ser, Leu, Arg, and Glu.

The human genome contains (a) billion nucleotide bases. The average gene consists of (b) bases. Which option is correct for a & b?

RNA polymerase subunit that recognises and binds to promoter is

Which of the following statements about DNA replication is not correct?

During protein synthesis in an organism at one point the process comes to a halt. Select the group of the three codons from the following, from which any one of the three could bring about this halt.