Dna Replication

Easybiology

The experimental proof for semiconservative replication of DNA was first shown in a:

Select the correct option:

Fungus

Bacterium

Plant

Virus

🔒 Solution Hidden from View

Submit your answer to unlock the detailed step-by-step solution.

About This Question

Subject: biology
Chapter: molecular basis of inheritance
Topic: dna replication
Difficulty: Easy
Year: 2025

Solution

Correct Answer:

Bacterium

Experiment: Conducted by Meselson and Stahl in 1958 using heavy nitrogen ( $^{15} N$ ).
Organism: They used Escherichia coli (E. coli), which is a common prokaryotic bacterium.
Method: They cultured the bacteria in medium containing $^{15} N H_{4} Cl$ and then transferred them to $^{14} N$ medium.
Conclusion: Centrifugation of DNA confirmed that DNA replication is semi-conservative in bacteria.

This easy difficulty biology question is from the chapter molecular basis of inheritance, covering the topic of dna replication. It appeared in the 2025 exam.

Looking for more practice? Explore all biology questions or browse molecular basis of inheritance questions on RankGuru.

Dna Replication

Select the correct option:

🔒 Solution Hidden from View

More molecular basis of inheritance Practice Questions

Which enzyme adds RNA primers during eukaryotic DNA replication?

Which codon acts as the initiator codon?

Which factor is required for the initiation of transcription in Prokaryotes?

In a DNA double helix, the two strands are:

Which of the following is NOT required for any of the techniques of DNA fingerprinting available at ...

Single Nucleotide Polymorphisms (SNPs) are located at how many places in the human genome?

If the sequence of nitrogen bases of the coding strand of DNA in a transcription unit is 5'-ATGAATG-...

In the Lac Operon, the 'i' gene codes for:

About This Question

Solution