Question

An amoeba is much less complex than a fruit fly; however the amoeba has a much larger genome (c-value). What is the best overall explanation for this paradox?

Answer 1

The amoeba has a much larger genome (C-value) because A large percentage of eukaryotic genomes is non-coding DNA, the amoeba has much more non-coding DNA than the fruit fly.

• The amount of DNA in an organism's haploid genome is measured by the C-value. It varies greatly, often rising in C-value as organism complexity increases—from prokaryotes to invertebrates, vertebrates, and plants.
• The so-called C-Value Paradox refers to the finding that genome size does not always rise in proportion to an organism's apparent level of complexity.
• In comparison to prokaryotes (organisms without a nucleus), such as bacteria, eukaryotes, or species having a nucleus to hold their genetic material (DNA), do have larger genomes.
• Only 4 million base pairs make up the best friend of microbiologists, E. coli. On the other hand, the fly, Drosophila Melanogaster, has 140 million base pairs. Clearly, a fly is more complicated than a bacterium.

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