Answer:
The correct option is D. Drug-resistant populations of microbes arise when exposure to drugs selectively kills sensitive cells, allowing overgrowth of resistant cells.
Explanation:
Drug- resistance can be described as a mechanism through which an organism can overcome the effect of a drug.
Usually, exposure of a drug again and again to a population of microbes will make the microbes resistant to that drug. The cells of the microbes undergo some change to overcome the effect of that particular drug.
A population of drug-resistant microbes might occur when the sensitive microbes get killed by the drug and resistant strains remain alive.
10 ng is the minimum amount of DNA to visualize it on agarose gel. The amount of DNA to load per well is variable. The least amount of DNA that can be detected with ethidum bromide is 10 ng.
No information is available regarding the options of the given question. The answer will contain all the factors that might cause the loss of genetic diversity.
Answer:
Genetic diversity may be defined as the different genetic constitution is present in the population. Mutation, natural selection results in evolution that increases the genetic diversity.
The genetic diversity can be lost in the local population by the different mechanisms. The sudden loss of the genetic diversity can occur through the natural calamity. The introduction of the new allele and its selection through many generation might result in the loss of genes present already in the population. Increase in the homozygosity can also cause the loss of genetic diversity.
The phase changing from liquid to gas is called condonsation.
Water vapor can be cooled to form water (liquid). This kind of change from a gas to liquid is referred/called to as condensation.
