Molecular Basis of Inheritance Questions

Choose incorrect statement from given below options :-

A polynucleotide chain is shown in the figure. Identify X and Y (types of bond)

Which of the following statements are correct ? (A) In double helix model of DNA, two chains have parallel polarity. (B) Pitch of helix in DNA is 3.4 nm. (C) In structure of DNA if sequence of base in one strand is known then sequence in other can be

Given below are some steps of transcription : A. RNA Polymerase uses nucleotide triphosphates as substrate during elongation. B. RNA Polymerase associates transiently with termination factor (ρ) to terminate the transcription. C. DNA polymerase facil

When DNA replication starts :

Which of the following is a primer dependent enzyme :-

Which of the following RNA is not required for the synthesis of protein?

Match the following:

Statement-I : rRNA carries genetic information from DNA to ribosome. Statement-II : One t-RNA can recognize more than one codon.

Assertion: During DNA replication, on one strand the replication is continuous while on the other strand it is discontinuous. Reason : DNA polymerase can synthesize DNA only in the 5'→3' direction.

Which histone protein is not present in the core of nucleosome:

Match List I with List II :Choose the correct answer from the options given below:

In the process of transcription, the strand of DNA with polarity ______ acts as a ______ strand:-

Histones are enriched with -

Assertion (A): Unequivocal proof that DNA is the genetic material came from Griffith's transformation experiment. Reason (R): The biochemical nature of genetic material was defined from transformation experiment.

Identify the correct statements from the following regarding Human Genome Project (HGP). A. The total number of genes is estimated at 30,000. B. More than 20% of the genome codes for proteins. C. Chromosome 1 has the most genes (2968) and the X chrom

Match the columns I and II, and choose the correct combination from the options given.

Match the following (a) tRNA — (1) Linking of amino acids (b) mRNA — (2) transfer of genetic information nucleolar organizing region (c) rRNA — (3) Transfer of amino acid transferase (d) Peptidyl — (4) Transfer of amino acid transferase from cytoplas

Assertion (A) : The t-RNA molecules possess anticodon. Reason (R) : It needs the message in form of codon.

A bacterium has 100% of its N2 bases labelled with N15. If it is allowed to replicate in medium with N14 bases for one cycle only, what will be the result?

DNA is a genetic material because of? I. Its stability II. Its replicability III. Its slow mutability IV. Its expressibility Choose the correct combination:

The DNA can be digested by the enzyme:

According to the Watson-Crick model of DNA, the two polynucleotide chains have;

Read the following statements regarding the lac operon. A. Lactose is the substrate for the enzyme beta- galactosidase and it regulates switching on and off of the operon. B. The repressor of the operon is synthesised constitutively from the z gene.

Given below are two statements: Statement I: During transcription, adenosine complements forms base pair with thymine. Statement II: In transcription, only a segment of DNA and only one of the strands is copied into RNA. Choose correct answer:

Ribosome is:

5-methyl uracil is:

Backbone of DNA:

Okazaki fragments joined by:

Translation refers to:

Nuclein discovered by:

DNA uniform diameter due to:

Base pairs per turn:

Codon is:

First genetic material:

If C = 20%, A = ?

RNA polymerase:

Pitch of DNA helix:

Nucleosome contains:

Meselson & Stahl experiment used:

Central dogma:

A genetic material must:

In RNA, extra -OH group present at:

Replication occurs at:

In Griffith experiment:

Nucleosomes constitute the repeating unit of:

All are pyrimidines except:

Assertion: RNA can directly code for protein synthesis Reason: RNA cannot easily express characters

In Hershey and Chase experiment, bacteriophage nucleic acid was labelled with:

DNA is a long polymer of: