15. Escherichia coli was grown for a period of time in 15N and transferred to 14N for two generations. Then the bacteria are lysed and the resulting DNA is fractionated in a Cs gradient. Compared to control bands at 15N level (low) and the 14N level (high) and a medium band intermediate between the low and high pands, the results will be: A. There will be one high band of DNA. B. There will be two bands of DNA equally divided between medium and high. C. There will be two bands of DNA equally divided between medium and low. D. There will be one medium band of DNA. E. There will be one low band of DNA.
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.
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