Continuously Growing Rodent Molars Result from a Predictable Quantitative Evolutionary Change over 50 Million Years

The fossil record is widely informative about evolution, but fossils are not systematically used to study the evolution of stem-cell-driven renewal. Here, we examined evolution of the continuous growth (hypselodonty) of rodent molar teeth, which is fuelled by the presence of dental stem cells. We st...
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Autor*in:	Vagan Tapaltsyan [verfasserIn] Jussi T. Eronen [verfasserIn] A. Michelle Lawing [verfasserIn] Amnon Sharir [verfasserIn] Christine Janis [verfasserIn] Jukka Jernvall [verfasserIn] Ophir D. Klein [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2015

Übergeordnetes Werk:	In: Cell Reports - Elsevier, 2015, 11(2015), 5, Seite 673-680
Übergeordnetes Werk:	volume:11 ; year:2015 ; number:5 ; pages:673-680

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.1016/j.celrep.2015.03.064

Katalog-ID:	DOAJ060298227

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publishDate	2015
allfields	10.1016/j.celrep.2015.03.064 doi (DE-627)DOAJ060298227 (DE-599)DOAJ076114df647943f6b630da6c1f538a1c DE-627 ger DE-627 rakwb eng QH301-705.5 Vagan Tapaltsyan verfasserin aut Continuously Growing Rodent Molars Result from a Predictable Quantitative Evolutionary Change over 50 Million Years 2015 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The fossil record is widely informative about evolution, but fossils are not systematically used to study the evolution of stem-cell-driven renewal. Here, we examined evolution of the continuous growth (hypselodonty) of rodent molar teeth, which is fuelled by the presence of dental stem cells. We studied occurrences of 3,500 North American rodent fossils, ranging from 50 million years ago (mya) to 2 mya. We examined changes in molar height to determine whether evolution of hypselodonty shows distinct patterns in the fossil record, and we found that hypselodont taxa emerged through intermediate forms of increasing crown height. Next, we designed a Markov simulation model, which replicated molar height increases throughout the Cenozoic and, moreover, evolution of hypselodonty. Thus, by extension, the retention of the adult stem cell niche appears to be a predictable quantitative rather than a stochastic qualitative process. Our analyses predict that hypselodonty will eventually become the dominant phenotype. Biology (General) Jussi T. Eronen verfasserin aut A. Michelle Lawing verfasserin aut Amnon Sharir verfasserin aut Christine Janis verfasserin aut Jukka Jernvall verfasserin aut Ophir D. Klein verfasserin aut In Cell Reports Elsevier, 2015 11(2015), 5, Seite 673-680 (DE-627)684964562 (DE-600)2649101-1 22111247 nnns volume:11 year:2015 number:5 pages:673-680 https://doi.org/10.1016/j.celrep.2015.03.064 kostenfrei https://doaj.org/article/076114df647943f6b630da6c1f538a1c kostenfrei http://www.sciencedirect.com/science/article/pii/S2211124715003551 kostenfrei https://doaj.org/toc/2211-1247 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2110 GBV_ILN_2112 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 AR 11 2015 5 673-680
spelling	10.1016/j.celrep.2015.03.064 doi (DE-627)DOAJ060298227 (DE-599)DOAJ076114df647943f6b630da6c1f538a1c DE-627 ger DE-627 rakwb eng QH301-705.5 Vagan Tapaltsyan verfasserin aut Continuously Growing Rodent Molars Result from a Predictable Quantitative Evolutionary Change over 50 Million Years 2015 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The fossil record is widely informative about evolution, but fossils are not systematically used to study the evolution of stem-cell-driven renewal. Here, we examined evolution of the continuous growth (hypselodonty) of rodent molar teeth, which is fuelled by the presence of dental stem cells. We studied occurrences of 3,500 North American rodent fossils, ranging from 50 million years ago (mya) to 2 mya. We examined changes in molar height to determine whether evolution of hypselodonty shows distinct patterns in the fossil record, and we found that hypselodont taxa emerged through intermediate forms of increasing crown height. Next, we designed a Markov simulation model, which replicated molar height increases throughout the Cenozoic and, moreover, evolution of hypselodonty. Thus, by extension, the retention of the adult stem cell niche appears to be a predictable quantitative rather than a stochastic qualitative process. Our analyses predict that hypselodonty will eventually become the dominant phenotype. Biology (General) Jussi T. Eronen verfasserin aut A. Michelle Lawing verfasserin aut Amnon Sharir verfasserin aut Christine Janis verfasserin aut Jukka Jernvall verfasserin aut Ophir D. Klein verfasserin aut In Cell Reports Elsevier, 2015 11(2015), 5, Seite 673-680 (DE-627)684964562 (DE-600)2649101-1 22111247 nnns volume:11 year:2015 number:5 pages:673-680 https://doi.org/10.1016/j.celrep.2015.03.064 kostenfrei https://doaj.org/article/076114df647943f6b630da6c1f538a1c kostenfrei http://www.sciencedirect.com/science/article/pii/S2211124715003551 kostenfrei https://doaj.org/toc/2211-1247 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2110 GBV_ILN_2112 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 AR 11 2015 5 673-680
allfields_unstemmed	10.1016/j.celrep.2015.03.064 doi (DE-627)DOAJ060298227 (DE-599)DOAJ076114df647943f6b630da6c1f538a1c DE-627 ger DE-627 rakwb eng QH301-705.5 Vagan Tapaltsyan verfasserin aut Continuously Growing Rodent Molars Result from a Predictable Quantitative Evolutionary Change over 50 Million Years 2015 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The fossil record is widely informative about evolution, but fossils are not systematically used to study the evolution of stem-cell-driven renewal. Here, we examined evolution of the continuous growth (hypselodonty) of rodent molar teeth, which is fuelled by the presence of dental stem cells. We studied occurrences of 3,500 North American rodent fossils, ranging from 50 million years ago (mya) to 2 mya. We examined changes in molar height to determine whether evolution of hypselodonty shows distinct patterns in the fossil record, and we found that hypselodont taxa emerged through intermediate forms of increasing crown height. Next, we designed a Markov simulation model, which replicated molar height increases throughout the Cenozoic and, moreover, evolution of hypselodonty. Thus, by extension, the retention of the adult stem cell niche appears to be a predictable quantitative rather than a stochastic qualitative process. Our analyses predict that hypselodonty will eventually become the dominant phenotype. Biology (General) Jussi T. Eronen verfasserin aut A. Michelle Lawing verfasserin aut Amnon Sharir verfasserin aut Christine Janis verfasserin aut Jukka Jernvall verfasserin aut Ophir D. Klein verfasserin aut In Cell Reports Elsevier, 2015 11(2015), 5, Seite 673-680 (DE-627)684964562 (DE-600)2649101-1 22111247 nnns volume:11 year:2015 number:5 pages:673-680 https://doi.org/10.1016/j.celrep.2015.03.064 kostenfrei https://doaj.org/article/076114df647943f6b630da6c1f538a1c kostenfrei http://www.sciencedirect.com/science/article/pii/S2211124715003551 kostenfrei https://doaj.org/toc/2211-1247 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2110 GBV_ILN_2112 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 AR 11 2015 5 673-680
allfieldsGer	10.1016/j.celrep.2015.03.064 doi (DE-627)DOAJ060298227 (DE-599)DOAJ076114df647943f6b630da6c1f538a1c DE-627 ger DE-627 rakwb eng QH301-705.5 Vagan Tapaltsyan verfasserin aut Continuously Growing Rodent Molars Result from a Predictable Quantitative Evolutionary Change over 50 Million Years 2015 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The fossil record is widely informative about evolution, but fossils are not systematically used to study the evolution of stem-cell-driven renewal. Here, we examined evolution of the continuous growth (hypselodonty) of rodent molar teeth, which is fuelled by the presence of dental stem cells. We studied occurrences of 3,500 North American rodent fossils, ranging from 50 million years ago (mya) to 2 mya. We examined changes in molar height to determine whether evolution of hypselodonty shows distinct patterns in the fossil record, and we found that hypselodont taxa emerged through intermediate forms of increasing crown height. Next, we designed a Markov simulation model, which replicated molar height increases throughout the Cenozoic and, moreover, evolution of hypselodonty. Thus, by extension, the retention of the adult stem cell niche appears to be a predictable quantitative rather than a stochastic qualitative process. Our analyses predict that hypselodonty will eventually become the dominant phenotype. Biology (General) Jussi T. Eronen verfasserin aut A. Michelle Lawing verfasserin aut Amnon Sharir verfasserin aut Christine Janis verfasserin aut Jukka Jernvall verfasserin aut Ophir D. Klein verfasserin aut In Cell Reports Elsevier, 2015 11(2015), 5, Seite 673-680 (DE-627)684964562 (DE-600)2649101-1 22111247 nnns volume:11 year:2015 number:5 pages:673-680 https://doi.org/10.1016/j.celrep.2015.03.064 kostenfrei https://doaj.org/article/076114df647943f6b630da6c1f538a1c kostenfrei http://www.sciencedirect.com/science/article/pii/S2211124715003551 kostenfrei https://doaj.org/toc/2211-1247 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2110 GBV_ILN_2112 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 AR 11 2015 5 673-680
allfieldsSound	10.1016/j.celrep.2015.03.064 doi (DE-627)DOAJ060298227 (DE-599)DOAJ076114df647943f6b630da6c1f538a1c DE-627 ger DE-627 rakwb eng QH301-705.5 Vagan Tapaltsyan verfasserin aut Continuously Growing Rodent Molars Result from a Predictable Quantitative Evolutionary Change over 50 Million Years 2015 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The fossil record is widely informative about evolution, but fossils are not systematically used to study the evolution of stem-cell-driven renewal. Here, we examined evolution of the continuous growth (hypselodonty) of rodent molar teeth, which is fuelled by the presence of dental stem cells. We studied occurrences of 3,500 North American rodent fossils, ranging from 50 million years ago (mya) to 2 mya. We examined changes in molar height to determine whether evolution of hypselodonty shows distinct patterns in the fossil record, and we found that hypselodont taxa emerged through intermediate forms of increasing crown height. Next, we designed a Markov simulation model, which replicated molar height increases throughout the Cenozoic and, moreover, evolution of hypselodonty. Thus, by extension, the retention of the adult stem cell niche appears to be a predictable quantitative rather than a stochastic qualitative process. Our analyses predict that hypselodonty will eventually become the dominant phenotype. Biology (General) Jussi T. Eronen verfasserin aut A. Michelle Lawing verfasserin aut Amnon Sharir verfasserin aut Christine Janis verfasserin aut Jukka Jernvall verfasserin aut Ophir D. Klein verfasserin aut In Cell Reports Elsevier, 2015 11(2015), 5, Seite 673-680 (DE-627)684964562 (DE-600)2649101-1 22111247 nnns volume:11 year:2015 number:5 pages:673-680 https://doi.org/10.1016/j.celrep.2015.03.064 kostenfrei https://doaj.org/article/076114df647943f6b630da6c1f538a1c kostenfrei http://www.sciencedirect.com/science/article/pii/S2211124715003551 kostenfrei https://doaj.org/toc/2211-1247 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2110 GBV_ILN_2112 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 AR 11 2015 5 673-680
language	English
source	In Cell Reports 11(2015), 5, Seite 673-680 volume:11 year:2015 number:5 pages:673-680
sourceStr	In Cell Reports 11(2015), 5, Seite 673-680 volume:11 year:2015 number:5 pages:673-680
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Biology (General)
isfreeaccess_bool	true
container_title	Cell Reports
authorswithroles_txt_mv	Vagan Tapaltsyan @@aut@@ Jussi T. Eronen @@aut@@ A. Michelle Lawing @@aut@@ Amnon Sharir @@aut@@ Christine Janis @@aut@@ Jukka Jernvall @@aut@@ Ophir D. Klein @@aut@@
publishDateDaySort_date	2015-01-01T00:00:00Z
hierarchy_top_id	684964562
id	DOAJ060298227
language_de	englisch
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callnumber-first	Q - Science
author	Vagan Tapaltsyan
spellingShingle	Vagan Tapaltsyan misc QH301-705.5 misc Biology (General) Continuously Growing Rodent Molars Result from a Predictable Quantitative Evolutionary Change over 50 Million Years
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topic_title	QH301-705.5 Continuously Growing Rodent Molars Result from a Predictable Quantitative Evolutionary Change over 50 Million Years
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title	Continuously Growing Rodent Molars Result from a Predictable Quantitative Evolutionary Change over 50 Million Years
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title_sort	continuously growing rodent molars result from a predictable quantitative evolutionary change over 50 million years
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title_auth	Continuously Growing Rodent Molars Result from a Predictable Quantitative Evolutionary Change over 50 Million Years
abstract	The fossil record is widely informative about evolution, but fossils are not systematically used to study the evolution of stem-cell-driven renewal. Here, we examined evolution of the continuous growth (hypselodonty) of rodent molar teeth, which is fuelled by the presence of dental stem cells. We studied occurrences of 3,500 North American rodent fossils, ranging from 50 million years ago (mya) to 2 mya. We examined changes in molar height to determine whether evolution of hypselodonty shows distinct patterns in the fossil record, and we found that hypselodont taxa emerged through intermediate forms of increasing crown height. Next, we designed a Markov simulation model, which replicated molar height increases throughout the Cenozoic and, moreover, evolution of hypselodonty. Thus, by extension, the retention of the adult stem cell niche appears to be a predictable quantitative rather than a stochastic qualitative process. Our analyses predict that hypselodonty will eventually become the dominant phenotype.
abstractGer	The fossil record is widely informative about evolution, but fossils are not systematically used to study the evolution of stem-cell-driven renewal. Here, we examined evolution of the continuous growth (hypselodonty) of rodent molar teeth, which is fuelled by the presence of dental stem cells. We studied occurrences of 3,500 North American rodent fossils, ranging from 50 million years ago (mya) to 2 mya. We examined changes in molar height to determine whether evolution of hypselodonty shows distinct patterns in the fossil record, and we found that hypselodont taxa emerged through intermediate forms of increasing crown height. Next, we designed a Markov simulation model, which replicated molar height increases throughout the Cenozoic and, moreover, evolution of hypselodonty. Thus, by extension, the retention of the adult stem cell niche appears to be a predictable quantitative rather than a stochastic qualitative process. Our analyses predict that hypselodonty will eventually become the dominant phenotype.
abstract_unstemmed	The fossil record is widely informative about evolution, but fossils are not systematically used to study the evolution of stem-cell-driven renewal. Here, we examined evolution of the continuous growth (hypselodonty) of rodent molar teeth, which is fuelled by the presence of dental stem cells. We studied occurrences of 3,500 North American rodent fossils, ranging from 50 million years ago (mya) to 2 mya. We examined changes in molar height to determine whether evolution of hypselodonty shows distinct patterns in the fossil record, and we found that hypselodont taxa emerged through intermediate forms of increasing crown height. Next, we designed a Markov simulation model, which replicated molar height increases throughout the Cenozoic and, moreover, evolution of hypselodonty. Thus, by extension, the retention of the adult stem cell niche appears to be a predictable quantitative rather than a stochastic qualitative process. Our analyses predict that hypselodonty will eventually become the dominant phenotype.
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title_short	Continuously Growing Rodent Molars Result from a Predictable Quantitative Evolutionary Change over 50 Million Years
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Continuously Growing Rodent Molars Result from a Predictable Quantitative Evolutionary Change over 50 Million Years

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