what are genes, how do chromatin material is present in the nucleus

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Solution

A gene is the basic physical and functional unit of heredity. It is made up of DNA.
Chromatin material is a complex combination of DNA and protein that makes up the chromosome in the nucleus of eukaryotic cells. It is usually found dispersed in the interphase nucleus and condensed into chromosome in mitosis and meiosis.

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Assertion(A): Genes are responsible for the transfer of characteristics from the parents to the offspring.
Reason(R): Genes are present in the nucleus.

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