Answer:
The scientist is determining the relative age of the rock and the method is known as relative dating of rocks.
Explanation:
The relative dating method is based on the fact that more older the rock layers, the more it would be deeper. The overlying layer of rock will be located in less deeper location, henceforth it would be less older rock layer. This method is mainly used by the scientists, for determining the age of the rocks or fossils embedded in it, before any absolute dating method like radioisotope dating of rocks is discovered.
In the gel electrophoresis, the DNA fragments are repelled from the negative pole of the electric field.
<h3>What do you mean by Gel electrophoresis?</h3>
Gel electrophoresis may be defined as a technique that separates DNA, RNA, and proteins on the basis of their molecular weight.
As we all know, DNA fragments are negatively charged in nature, and hence they always move towards the positive pole of the electric field.
Therefore, in the gel electrophoresis, the DNA fragments are repelled from the negative pole of the electric field.
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The Carbon/Oxygen Cycle<span> involves three major processes and one minor process: </span>photosynthesis<span>, </span>respiration<span>, </span>combustion<span>and </span>decomposition<span>.</span>
In this case, brown frogs increase and green frogs decrease, whereas natural selection would cause this change in allele frequency.
<h3>What is natural selection?</h3>
Natural selection is the main evolutionary force by which populations change (evolve) across time.
Natural selection leads to the change in the allele frequencies depending on the more adapted phenotypes in a given environment.
In conclusion, brown frogs increase and green frogs decrease, whereas Natural selection would cause this change in allele frequency.
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Fossils usually provide paleontologists with information about each of the following except <span>Fossils usually provide paleontologists with information about each of the following except DNA</span>
