C values and C value paradox

C values and C value paradox

November 28, 2021

The C values and C value paradox

  • The C value is the total amount of DNA in the (haploid) genome.
  • It is a characteristic of each living species 
  • There is enormous variation in the range of C-values, from <106 bp for a mycoplasma to > 1011 bp for some plants and amphibians. 
  • There is a steady increase in genome size with increase in the complexity in the lower eukaryotes.
  • It is understood that the increase in the genome size is essential in order to accommodate the increasing complexity of the genomes from bacteria to insects.
  • However, after this point there is no good relationship between genome size and morphological complexity of the higher eukaryotes

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