Transformation is the process where bacteria take up a plasmid from the surrounding and then express the genes into proteins. Scientists only want the genes expressed at certain times, so they control the expression using the operon system. The arabinose operon is the classic system they use to control when the genes are to be expressed by the bacteria. Arabinose is a sugar that can be added to the agar plate that will turn on the operon. If arabinose is NOT present, no genes are expressed. A. What type of operon system is this? ____(negative controlled or positive) Explain _____ B. What type of gene regulation is this____ (inducible or irrepressible) Explain: ____
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.
Transformation is the process where bacteria take up a plasmid from the surrounding and then express the genes into proteins. Scientists only want the genes expressed at certain times, so they control the expression using the operon system. The arabinose operon is the classic system they use to control when the genes are to be expressed by the bacteria. Arabinose is a sugar that can be added to the agar plate that will turn on the operon.
If arabinose is NOT present, no genes are expressed.
A. What type of operon system is this? ____(negative controlled or positive) Explain _____
B. What type of gene regulation is this____ (inducible or irrepressible) Explain: ____
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