Molecular Basis Of Inheritance - Botany - Biology Previous Year Questions

Match the process in Column I with the action in Column II.

Select the INCORRECT statement.

The number of nucleotides in tRNA is _________ .

Which of the following is the role of SSBP's during DNA replication?

Select the INCORRECT statement.

The size of mRNA is generally related to $\qquad$

Given below are two statements:

Statement I - In prokaryotes, there is only replicon however in eukaryotes, these are several replicons in tandem.

Statement II - Two separated strands in a replicon of DNA are prevented from re-joining by helicase enzyme.

In light of above statements, choose the correct answer from the option given below.

All the 64 codons in the dictionary of genetic code were deciphered by __________

In the processing of hnRNA in eukaryotic cell, the primary transcripts are processed in the following sequence.

Two different amino acids are never encoded by the same codon, this character of genetic code is called ____________.

The very first step of initiation of translation is

In an operon, when repressor protein attaches to the operator then __________ .

Exons on hnRNA codes for $\qquad$

Given below are two statements.

Statement I - In Meselson and Stahl's experiment the samples were separated by using CsCl equilibrium gradients.

Statement II - ${ }^{15} \mathrm{~N}$ is a heavy isotope and can be separated based on density gradient.

In the light of above statements, select the correct option given below:

Identify the correct sequence of steps in Hershey and Chase's experiment.

Which type of mutation causes sickle cell anaemia?

The core DNA in the nucleosome is _________ base pairs long

Which one of the following combination of bacterial strains used by Griffith, when injected to mice will NOT kill them?

Identify the mRNA transcribed from the DNA having following nucleotide sequence.