of the following statements BEST DESCRIBES the main findings of the Meselson-Stahl experiment? A. DNA can be separated using centrifugation B. The semiconservative model of DNA replication is more accurate than the dispersive or conservative models of DNA replication C. Using 14N in experiments is an effective way of tracking nitrogen molecules D. Bacteria grown in the presence of a heavier nitrogen isotope (15N) will replicate at a slower rate than those that utilise a lighter nitrogen isotope (14
Bacterial Genomics
The study of the morphological, physiological, and evolutionary aspects of the bacterial genome is referred to as bacterial genomics. This subdisciplinary field aids in understanding how genes are assembled into genomes. Further, bacterial or microbial genomics has helped researchers in understanding the pathogenicity of bacteria and other microbes.
Transformation Experiment in Bacteria
In the discovery of genetic material, the experiment conducted by Frederick Griffith on Streptococcus pneumonia proved to be a stepping stone.
Plasmids and Vectors
The DNA molecule that exists in a circular shape and is smaller in size which is capable of its replication is called Plasmids. In other words, it is called extra-chromosomal plasmid DNA. Vectors are the molecule which is capable of carrying genetic material which can be transferred into another cell and further carry out replication and expression. Plasmids can act as vectors.
Which of the following statements BEST DESCRIBES the main findings of the Meselson-Stahl experiment?
| A. |
DNA can be separated using centrifugation |
|
| B. |
The semiconservative model of |
|
| C. |
Using 14N in experiments is an effective way of tracking nitrogen molecules |
|
| D. |
Bacteria grown in the presence of a heavier nitrogen isotope (15N) will replicate at a slower rate than those that utilise a lighter nitrogen isotope (14N) |
|
| E. |
Both strands of each new DNA double helix are brand new and synthesized from individual |
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