You are a scientist who discovers a potentially new microorg

You are a scientist who discovers a potentially new microorganism. In order to classify the organism and to compare it to other known specimens, you sequence its DNA. When you get the results back, you discover that your microorganism has a G + C content of 20%.

Is this a low or high G + C content?

Into which group does your organism fit best-

Firmicutes, A + T content 80%

Actinobacteria, G + C content 42%

Lysobacter, G+C content 65-72%

III. Do you expect that your organism will be gram positive or gram negative and why?

Solution

This is a low GC content and genome of this organism will in general be small in size and in number of genes.

According to chargaff\'s rule, A+G=C+T

So A+T will be 80%

So the organism will lie in Firmicutes group.

3. This organism should be gram positive because as belonging to the class of Firmicutes group it should have pertidoglycan layer and other characters which will result in positive test for Gram stain.