Identify the correct order of organisation of genetic material from largest to smallest :

Chromosome, genome, nucleotide, gene

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Chromosome, gene, genome, nucleotide

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Genome, chromosomes, nucleotide, gene

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Genome, chromosome, gene, nucleotide

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Solution

The correct option is D Genome, chromosome, gene, nucleotide
A genome is all the genetic material in the cell.

A chromosome is a single molecule of DNA in a cell.

A gene is a small segment of DNA that codes for a functional protein.

A nucleotide is a building block of DNA or RNA. Many nucleotides together make a DNA molecule.

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