The scientific notation 2 x 10-2 has what value?
0.02
0.002
0.2
0.0002

Answer: Option (4) is the correct answer.

Explanation:

Atomic mass of an atom or element means the total number of protons and total number of neutrons present.

Whereas atomic number means the total number of protons present in an atom or element.

In period 5 on the Periodic Table, elements from left to right are arranged in order of increasing atomic number.

On the other hand, the atomic mass is not increasing from left to right.

Molecular clocks use the relationship between the DNA of several groups of organisms to evaluate how long ago they diverged evolutionarily from one another. Therefore, option (4) is correct.

What are Molecular clocks?

The molecular clock can be described as a figurative term for a technique that utilizes the mutation rate of biomolecules to determine the time when two or more life forms diverged. The biomolecular data used are usually nucleotide sequences for DNA, RNA, or amino acid sequences for proteins.

The benchmarks for calculating the mutation rate are often fossil or archaeological dates. The molecular clock is commonly used in molecular evolution to estimate times of speciation or radiation.

The molecular clock can only give one time period as it cannot assign concrete dates. For viral phylogenetics and ancient DNA studies, the areas of evolutionary biology, the intermediate samples can be utilized to more precisely calibrate the molecular clock.

Learn more about Molecular clocks, here:

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Explanation:

In chemistry, internodes refer to the points in the structure of a molecule or molecular chain where carbon atoms are located. Internodes are carbon atoms that are directly connected by a single bond. These carbon atoms are often called "C" followed by a number indicating their position in the chain. Carbon atoms that are not internodes are called "terminal carbons" and are bonded to other atoms or chemical groups. The structure of internodes and terminal carbons is important for understanding the geometry and reactivity of organic molecules.