Kimura’s Theory of Non-Adaptive Radiation and Peto’s Paradox: A Missing Link? DOI Creative Commons
John H. Herrick

Biology, Journal Year: 2023, Volume and Issue: 12(8), P. 1140 - 1140

Published: Aug. 17, 2023

Karyotype diversity reflects genome integrity and stability. A strong correlation between karyotype species richness, meaning the number of in a phylogenetic clade, was first reported mammals over forty years ago: mammalian clades, standard deviation (KD) closely corresponded to richness (SR) at order level. These initial studies, however, did not control for signal, raising possibility that due relatedness among clade. Accordingly, trivially simply as passive consequence adaptive radiation. more recent study controlled signals established phylogenetically independent, suggesting cannot, itself, explain observed corresponding diversity. The is, therefore, remarkable because molecular mechanisms contributing are evolutionarily independent ecological richness. Recently, it shown salamanders two processes generating size were indeed operate parallel, potential non-adaptive, non-causal but biologically meaningful relationship. KD depends on mutational input genetic stability, whereas factors natural selection acting phenotypic As mutation independently involve separate unrelated evolutionary mechanisms—there is no reason priori expect such strong, let alone any, SR. That exists consistent with Kimura’s theory non-adaptive radiation than ecologically based theories macro-evolution, which excluded theory. following reviews evidence support proposal, other findings contribute wider understanding underlying process

Language: Английский

Into the Blue: Exploring genetic mechanisms behind the evolution of baleen whales DOI Creative Commons
Gabrielle Genty, Jonathan Sandoval‐Castillo, Luciano B. Beheregaray

et al.

Gene, Journal Year: 2024, Volume and Issue: 929, P. 148822 - 148822

Published: Aug. 3, 2024

Marine ecosystems are ideal for studying evolutionary adaptations involved in lineage diversification due to few physical barriers and reduced opportunities strict allopatry compared terrestrial ecosystems. Cetaceans (whales, dolphins, porpoises) a diverse group of mammals that successfully adapted various habitats within the aquatic environment around 50 million years ago. While overall adaptive transition from fully species is relatively well understood, radiation modern whales still unclear. Here high-quality genomes derived previously published data were used identify genomic regions potentially underpinned baleen (Balaenopteridae). A robust molecular phylogeny was reconstructed based on 10,159 single copy complete genes eight mysticetes, seven odontocetes two cetacean outgroups. Analysis positive selection across 3,150 revealed balaenopterids have undergone numerous idiosyncratic convergent variations may explain their diversification. Genes associated with aging, survival homeostasis enriched all species. Additionally, immune system disclosed largest species, blue fin whales. Such can be ascribed morphological evolution, allowing them attain greater length increased cell number. Further evidence presented about gene might contributed extensive anatomical changes shown by cetaceans, including adaptation distinct environments diets. This study contributes our understanding basis linked radiation, thereby enhancing evolution.

Language: Английский

Citations

0
Compared to other NHEJ factors, DNA-PK protein and RNA levels are markedly increased in all higher primates, but not in prosimians or other mammals DOI
Giovanni Pascarella, Kayla N. Conner, Noah J. Goff

et al.

DNA repair, Journal Year: 2024, Volume and Issue: 142, P. 103737 - 103737

Published: Aug. 8, 2024

Language: Английский

Citations

0
Kimura’s Theory of Non-adaptive Radiation and Peto’s Paradox: A Missing Link? DOI Open Access
John H. Herrick

Published: July 20, 2023

A strong correlation between karyotype diversity and species richness in mammals was first reported over forty years ago: mammalian phylogenetic clades, standard deviation of (KD) closely corresponds to the (SR). These initial studies, however, did not control for signal, raising possibility that due relatedness among a clade. Accordingly, trivially reflects simply as passive consequence adaptive radiations. more recent study has controlled signal established phylogenetically independent, suggesting cannot, itself, explain observed corresponding diversity. The is therefore remarkable because mechanisms contributing are evolutionarily independent Recently, it shown salamanders two processes generating genetic indeed operate parallel, potential non-adaptive non-causal relationship fundamental variables involved following will examine KD SR context Motoo Kimura’s theory radiation.

Language: Английский

Citations

1
Kimura’s Theory of Non-adaptive Radiation and Peto’s Paradox: A Missing Link? DOI Open Access
John H. Herrick

Published: July 31, 2023

A strong correlation between karyotype diversity and species richness in mammals was first reported over forty years ago: mammalian phylogenetic clades, standard deviation of (KD) closely corresponds to the (SR). These initial studies, however, did not control for signal, raising possibility that due relatedness among a clade. Accordingly, trivially reflects simply as passive consequence adaptive radiations. more recent study has controlled signal established phylogenetically independent, suggesting cannot, itself, explain observed corresponding diversity. The is therefore remarkable because mechanisms contributing are evolutionarily independent Recently, it shown salamanders two processes generating genetic indeed operate parallel, potential non-adaptive non-causal relationship fundamental variables involved following will examine KD SR context Motoo Kimura’s theory radiation.

Language: Английский

Citations

1
Kimura’s Theory of Non-Adaptive Radiation and Peto’s Paradox: A Missing Link? DOI Creative Commons
John H. Herrick

Biology, Journal Year: 2023, Volume and Issue: 12(8), P. 1140 - 1140

Published: Aug. 17, 2023

Karyotype diversity reflects genome integrity and stability. A strong correlation between karyotype species richness, meaning the number of in a phylogenetic clade, was first reported mammals over forty years ago: mammalian clades, standard deviation (KD) closely corresponded to richness (SR) at order level. These initial studies, however, did not control for signal, raising possibility that due relatedness among clade. Accordingly, trivially simply as passive consequence adaptive radiation. more recent study controlled signals established phylogenetically independent, suggesting cannot, itself, explain observed corresponding diversity. The is, therefore, remarkable because molecular mechanisms contributing are evolutionarily independent ecological richness. Recently, it shown salamanders two processes generating size were indeed operate parallel, potential non-adaptive, non-causal but biologically meaningful relationship. KD depends on mutational input genetic stability, whereas factors natural selection acting phenotypic As mutation independently involve separate unrelated evolutionary mechanisms—there is no reason priori expect such strong, let alone any, SR. That exists consistent with Kimura’s theory non-adaptive radiation than ecologically based theories macro-evolution, which excluded theory. following reviews evidence support proposal, other findings contribute wider understanding underlying process

Language: Английский

Citations

0