Answer: Southern blot
Explanation:
The techniques of Southern blotting helps to identify specific sequences of DNA among two or more samples that have been collected from organisms to be investigated.
This biochemical process also involves electrophoresis and hybridization of DNA to obtain the right order of the nucleotide bases, as similar order of bases would infer COMMON ANCESTRY between the two organisms.
Answer:
Production of nitrogen oxides is the event which occurs first in the formation of photochemical smog.
Explanation:
Photochemical smog is a type of smog which occurs when volatile gases such as nitrogen oxide react with the sunlight in the atmosphere. Due to this reaction, smog is formed which is brown in color. This nitrogen oxide gas is produced when the fossil fuel burns in the engines of vehicles. Nitrogen oxide is volatile gas which means it directly goes in the atmosphere and contribute in air pollution and global warming.
The answer is C. In strike-slip faults, the two crusts on either side of the fault move along each other , horizontally. They are also referred to as lateral or wrench faults. And are caused by horizontal compression. An example of a strike-slip fault is the San Andreas fault.
Answer:
The correct answer is option D, that is, bottleneck effect.
Explanation:
A phenomenon, which occurs due to events like earthquakes, floods, or other natural calamities that result in the severe declination in the size of a particular population is known as the bottleneck effect. The bottleneck effect is an extreme illustration of genetic drift that results in the reduction of a population's genetic variability.
With the decline in the size of a specific population, a reduction in the genetic variability of the same population is witnessed due to the loss of alleles. This eventually makes the population vulnerable to pollution and diseases. Hence, the given case is an example of the bottleneck effect.
