Size of the Whole versus Number of Parts in Genomes

It is known that chromosome number tends to decrease as genome size increases in angiosperm plants. Here the relationship between number of parts (the chromosomes) and size of the whole (the genome) is studied for other groups of organisms from different kingdoms. Two major results are obtained. Fir...

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Main Authors: Núria Forns, Ramon Ferrer-i-Cancho, Jaume Baixeries, Antoni Hernández-Fernández
Format: Article
Language:English
Published: MDPI AG 2011-08-01
Series:Entropy
Subjects:
Online Access:http://www.mdpi.com/1099-4300/13/8/1465/
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author Núria Forns
Ramon Ferrer-i-Cancho
Jaume Baixeries
Antoni Hernández-Fernández
author_facet Núria Forns
Ramon Ferrer-i-Cancho
Jaume Baixeries
Antoni Hernández-Fernández
author_sort Núria Forns
collection DOAJ
description It is known that chromosome number tends to decrease as genome size increases in angiosperm plants. Here the relationship between number of parts (the chromosomes) and size of the whole (the genome) is studied for other groups of organisms from different kingdoms. Two major results are obtained. First, the finding of relationships of the kind “the more parts the smaller the whole” as in angiosperms, but also relationships of the kind “the more parts the larger the whole”. Second, these dependencies are not linear in general. The implications of the dependencies between genome size and chromosome number are two-fold. First, they indicate that arguments against the relevance of the finding of negative correlations consistent with Menzerath-Altmann law (a linguistic law that relates the size of the parts with the size of the whole) in genomes are seriously flawed. Second, they unravel the weakness of a recent model of chromosome lengths based upon random breakage that assumes that chromosome number and genome size are independent.
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spelling doaj.art-51cf680d7d7741409830234617b7bb882022-12-22T04:22:50ZengMDPI AGEntropy1099-43002011-08-011381465148010.3390/e13081465Size of the Whole versus Number of Parts in GenomesNúria FornsRamon Ferrer-i-CanchoJaume BaixeriesAntoni Hernández-FernándezIt is known that chromosome number tends to decrease as genome size increases in angiosperm plants. Here the relationship between number of parts (the chromosomes) and size of the whole (the genome) is studied for other groups of organisms from different kingdoms. Two major results are obtained. First, the finding of relationships of the kind “the more parts the smaller the whole” as in angiosperms, but also relationships of the kind “the more parts the larger the whole”. Second, these dependencies are not linear in general. The implications of the dependencies between genome size and chromosome number are two-fold. First, they indicate that arguments against the relevance of the finding of negative correlations consistent with Menzerath-Altmann law (a linguistic law that relates the size of the parts with the size of the whole) in genomes are seriously flawed. Second, they unravel the weakness of a recent model of chromosome lengths based upon random breakage that assumes that chromosome number and genome size are independent.http://www.mdpi.com/1099-4300/13/8/1465/Menzerath-Altmann lawgenome sizechromosomes
spellingShingle Núria Forns
Ramon Ferrer-i-Cancho
Jaume Baixeries
Antoni Hernández-Fernández
Size of the Whole versus Number of Parts in Genomes
Entropy
Menzerath-Altmann law
genome size
chromosomes
title Size of the Whole versus Number of Parts in Genomes
title_full Size of the Whole versus Number of Parts in Genomes
title_fullStr Size of the Whole versus Number of Parts in Genomes
title_full_unstemmed Size of the Whole versus Number of Parts in Genomes
title_short Size of the Whole versus Number of Parts in Genomes
title_sort size of the whole versus number of parts in genomes
topic Menzerath-Altmann law
genome size
chromosomes
url http://www.mdpi.com/1099-4300/13/8/1465/
work_keys_str_mv AT nuriaforns sizeofthewholeversusnumberofpartsingenomes
AT ramonferrericancho sizeofthewholeversusnumberofpartsingenomes
AT jaumebaixeries sizeofthewholeversusnumberofpartsingenomes
AT antonihernandezfernandez sizeofthewholeversusnumberofpartsingenomes