Bissoy.com
Doctors Medicines MCQs Q&A

Which isotopes were used by the researchers who first confirmed the semiconservative nature of DNA replication?

Which isotopes were used by the researchers who first confirmed the semiconservative nature of DNA replication? Correct Answer Nitrogen

In 1957, researchers used the Nitrogen isotopes to confirm the semiconservative nature of DNA replication. At the California Institute of Technology, the researches grew bacteria in two subsequent mediums containing 15N and 14N isotopes.

Related Questions

How many types of replication models were considered before the semiconservative nature of DNA replication was confirmed?
Consider the following statements regarding DNA replication and choose the correct answer:
1. The very first requirement of DNA synthesis is the presence of a template or plan along which the new strand is to be constructed
2. The second requirement is of a DNA-dependent-DNA polymerase or simply DNA polymerase enzyme
3. A DNA Pol cannot join two free nucleotides; one of them must be anchored by hydrogen bonds to a DNA strand
4. Replication takes place bidirectionally
Which among the following statements regarding filing Rejoinder/Replication in a suit, as per the Code of Civil Procedure 1908, are correct?
1. Rejoinder/ Replication is filed as a matter of Right
2. Provision of filing Rejoinder/ Replication is contained under Order VIII of the Code of Civil Procedure
3. Rejoinder/Replication may be filed only after due permission of the Court.
4. Rejoinder/Replication is a part of pleading.
Select the correct answer:
In which organism was the “Semiconservative theory of DNA replication” first observed?
Semiconservative nature of replication of eukaryotic chromosome was first demonstrated by _______
Semiconservative nature of replication of eukaryotic chromosome was first demonstrated by _______________
Which process is termed as “semiconservative DNA replication”?
Of the 50 researchers in a work group, 40% will be assigned to Team A and the remaining 60% to Team B. However, 70% of the researchers prefer team A and 30% prefer Team B. What is the least possible number of researchers who will not be assigned to the team they prefer ?
The first and the last parts of the sentence/paragraph are numbered 1 and 6. The rest of the sentences are split into four parts and A, B, C and D. These four parts are not given in their order. Read the sentence/paragraph and find out which of the four combinations is correct. 1. With 80 laboratory-confirmed cases of the Zika virus already in A. in July the same year a single case was reported from Tamil Nadu’s Krishnagiri district. B. Jaipur, including 22 pregnant women, the latest outbreak is India’s most severe so far. C. In January 2017, three confirmed cases of Zika were reported from Ahmedabad, including a pregnant woman, D. Unlike in the case of the Ahmedabad outbreak that was kept under 6. wraps by the Health Ministry, there has been more transparency in the last two instances.
Which of the following are features of semiconservative replication?