Unequivocal proof that DNA is the genetic material was first proposed by
Unequivocal proof that DNA is the genetic material was first proposed by
Alfred Hershey and Martha Chase
Avery, Macleoid and McCarthy
Wilkins and Franklin
Frederick Griffith
The Correct Option is A
Solution and Explanation
In the Hershey-Chase experiment conducted in 1952, Alfred Hershey and Martha Chase used bacteriophages (viruses that infect bacteria) to show that DNA, rather than protein, is the genetic material. The experiment provided strong evidence that DNA carries the genetic information needed for viral replication within bacterial cells.
Therefore, The correct option is (A): Alfred Hershey and Martha Chase
Top Questions on the molecular basis of inheritance
- Nucleosome is associated with ______ molecules of histones.
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- If the length of a DNA molecule is 1.1 metres, what will be the approximate number of base pairs?
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Match List I with List II.
List-I List-II (a) Gene ‘a’ (i) β-galactosidase (b) Gene ‘y’ (ii) Transacetylase (c) Gene ‘i’ (iii) Permease (d) Gene ‘z’ (iv) Repressor protein Choose the correct answer from the options given below:
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What is the role of RNA polymerase III in the process of transcription in Eukaryotes?
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- Which enzyme initiates the process of replication?
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Questions Asked in NEET exam
- Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : The potential (V) at any axial point, at 2 m distance(r) from the centre of the dipole of dipole moment vector \(\vec{P}\) of magnitude, 4 × 10-6 C m, is ± 9 × 103 V.
(Take \(\frac{1}{4\pi\epsilon_0}=9\times10^9\) SI units)
Reason R : \(V=±\frac{2P}{4\pi \epsilon_0r^2}\), where r is the distance of any axial point, situated at 2 m from the centre of the dipole.
In the light of the above statements, choose the correct answer from the options given below :- NEET (UG) - 2024
- Magnetic Field
- Given below are two statements:
Statement I: Mitochondria and chloroplasts both double membranes bound organelles.
Statement II: Inner membrane of mitochondria is relatively less permeable, as compared chloroplast. I
In the light of the above statements, choose the mis appropriate answer from the options given below- NEET (UG) - 2024
- Cell structure and organelles
- Match List I with List II:Choose the correct answer from the options given below:
List I
List II
A Mesozoic Era I Lower invertebrates B Proterozoic Era II Fish & Amphibia C Cenozoic Era III Birds & Reptiles D Paleozoic Era IV Mammals - NEET (UG) - 2024
- Origin Of Life
- A parallel plate capacitor is charged by connecting it to a battery through a resistor. If I is the current in the circuit, then in the gap between the plates :
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- Capacitors and Capacitance
- The terminal voltage of the battery, whose emf is\(10V\) and internal resistance \(1\), when connected through an external resistance of \(42\) as shown in the figure is:
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- Resistance and Resistivity
Concepts Used:
The Molecular Basis of Inheritance
DNA Replication:
DNA synthesis is commenced at particular points within the DNA strand referred to as ‘origins’, which are certain coding regions. There are numerous origin sites, and when replication of DNA starts, these sites are mentioned as replication forks. Within the replication, the complex is the enzyme DNA Helicase, so that they can be utilized as a template for replication. DNA Primase is another enzyme that's essential in DNA replication.
RNA:
Ribonucleic acid (RNA) is an essential biological macromolecule that exists all together in biological cells. It is principally involved in the synthesis of proteins, that carry the messenger instructions from DNA, which itself contains the genetic instructions needed for the event and maintenance of life. In some viruses, RNA, in spite of DNA, carries genetic information.
Genetic Code:
Genetic code is the term we use in the manner that the four bases of DNA--the A, C, G, and Ts--are strung together in a way that the ribosome, the cellular machinery, can read them and switch them into a protein. In the ordering, every three nucleotides during a row count as a triplet and code for one amino alkanoic acid.
Read More: Molecular Basis of Inheritance