<u>Density</u> – The amount of matter in a given space. In scientific terms, density is the amount of mass in a unit of volume.
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The amount of matter in a given amount of space is known as the <u>Density.</u>
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What is Mutation
The major source of the genetic diversity among microorganisms upon which natural selection operates is Mutation.
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<h2>Answer:</h2>
The correct statement is option A which is, "A gene is a segment on the DNA. DNA is wrapped in proteins to form a chromosome".
<h3>Explanation:</h3>
- A gene is the part of DNA in the nucleus which encodes for the specific trait in the body. DNA is the nucleotide sequence which is the blue print for the whole organism. It contains genes for all the structures and functions in the body.
- So it is very long sequence containing the million of genes. So in nucleus it is present in compress form. It is wrapped on the histones proteins and condense and supersondense into a specific structure which is known as chromosome.
<span>Louis Pasteur, French scientist</span>