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Genome size refers to the amount of DNA contained in a :

  • A.Haploid genome
  • B.Diploid genome
  • C.Haploid as well as diploid genome
  • D.Complete organism

Answer: A

Genome size refers to the DNA in a Haploid genome.

Genome size is the C-value: the amount of DNA in one complete haploid set of chromosomes, as found in a gamete, given in picograms or base pairs. The human genome, for example, is about 3.1 billion base pairs, while a diploid human cell contains about twice that.

A diploid nucleus holds two genomes, so measuring it would double the figure; 'haploid as well as diploid' therefore cannot both be the genome size. The DNA of a complete organism would depend on the number of cells and is not a fixed property of the species.

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