In Hershey and Chase experiment, some viruses grew on medium that contained:
35S, 32P
Hershey and Chase labeled bacteriophages with:
1. 35S: Labeled sulfur to mark proteins, as sulfur is present in proteins but not in DNA.
2. 32P: Labeled phosphorus to mark DNA, as phosphorus is a component of DNA but not proteins.
Their experiment demonstrated that only DNA entered bacterial cells during infection, proving DNA is the genetic material.
Similar Questions
Arrange the following steps of DNA fingerprinting in proper sequence:
(A) Hybridisation using labelled VNTR probe
(B) Separation of DNA fragments by electrophoresis
(C) Digestion of DNA by restriction endonucleases
(D) Blotting of separated DNA fragments to nylon
(E) Isolation of DNA
Choose the correct answer from the options given below:
Nucleosome is:
“Transforming Principle” was given by:
Select the incorrect statement:
Match List-I with List-II:
List-I (Genes) List-II (Proteins – codes for lac operon) (A) ‘i’ (I) permease (B) ‘a’ (II) β-galactosidase (C) ‘y’ (III) transacetylase (D) ‘z’ (IV) repressor Choose the correct answer from the options given below:
Amino acid is attached to which site of tRNA?
Given below is the DNA coding sequence. Its complementary strand would read as:
5′ – GTATTACG – 3′
The size of VNTR varies from:
In which phase of the cell cycle does replication of DNA take place?
Who performed experiments on Vicia faba to prove that DNA replicates semi-conservatively?
Important Questions from Molecular Basis of Inheritance
What will be the chromosome number in the gamete of fruit fly if its meiocyte has 8 chromosomes?
Match List-I with List-II:
List-I (Organism) List-II (Sex Chromosomes) (A) Male grasshopper (I) XY (B) Male Drosophila (II) XX (C) Female bird (III) XX (D) Female grasshopper (IV) XO Choose the correct answer from the options given below:
Match List-I with List-II:
List-I List-II (A) Bacteriophage lambda (I) 231 gene (B) Y-chromosome of human (II) 48502 bp (C) Haploid content of human DNA (III) 3.3 × 109 bp (D) Escherichia coli DNA (IV) 4.6 × 106 bp Choose the correct answer from the options given below:
Central dogma in molecular biology states that genetic information flows from:
Read the following and select the set of correct statements. (A) Euchromatin is transcriptionally inactive (B) Heterochromatin is more densely packed (C) Heterochromatin is loosely packed (D) Euchromatin is transcriptionally active (E) Euchromatin stains lighter
