Molecular Basis of Inheritance · Biology · MHT CET (Biology)
MCQ (Single Correct Answer)
The very first step of initiation of translation is
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:
Exons on hnRNA codes for $\qquad$
In an operon, when repressor protein attaches to the operator then __________ .
Identify the correct sequence of steps in Hershey and Chase's experiment.
Which type of mutation causes sickle cell anaemia?
Glycine is coded by GGA in prokaryotic cell, it will code for ________ in eukaryotic cell.
Identify the mRNA transcribed from the DNA having following nucleotide sequence.
The core DNA in the nucleosome is _________ base pairs long
If the sequence of gene loci on a chromosome are A-B-C-D-E-O-T. Which of the following gene pair will have least probability of being inherited together?
Which one of the following combination of bacterial strains used by Griffith, when injected to mice will NOT kill them?
Select the INCORRECT statement.
Match the process in Column I with the action in Column II.
| Column I |
Column II |
||
|---|---|---|---|
| i. | Tailing | a. | Removal of introns |
| ii. | Capping | b. | Polyadenylation |
| iii. | Translocation | c. | Addition of $\mathrm{mG}_{\mathrm{ppp}}$ at $5^{\prime}$ end of hnRNA |
| iv. | Splicing | d. | Movement of ribosome on mRNA. |
Which of the following is the role of SSBP's during DNA replication?
The number of nucleotides in tRNA is _________ .
Select the INCORRECT statement.
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.
The size of mRNA is generally related to $\qquad$
All the 64 codons in the dictionary of genetic code were deciphered by __________
Two different amino acids are never encoded by the same codon, this character of genetic code is called ____________.
In the processing of hnRNA in eukaryotic cell, the primary transcripts are processed in the following sequence.