Cited by 142Evolution and Paleontology StudiesEvolution and Genetic DynamicsGenomics and Phylogenetic Studies

Molecular Clocks in Reptiles: Life History Influences Rate of Molecular Evolution

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Bromham, Lindell·2002·Molecular Biology and Evolution

Abstract

Life history has been implicated as a determinant of variation in rate of molecular evolution amongst vertebrate species because of a negative correlation between body size and substitution rate for many molecular data sets. Both the generality and the cause of the negative body size trend have been debated, and the validity of key studies has been questioned (particularly concerning the failure to account for phylogenetic bias). In this study, a comparative method has been used to test for an association between a range of life-history variables-such as body size, age at maturity, and clutch size-and DNA substitution rate for three genes (NADH4, cytochrome b, and c-mos). A negative relationship between body size and rate of molecular evolution was found for phylogenetically independent pairs of reptile species spanning turtles, lizards, snakes, crocodile, and tuatara. Although this study was limited by the number of comparisons for which both sequence and life-history data were available, the results suggest that a negative body size trend in rate of molecular evolution may be a general feature of reptile molecular evolution, consistent with similar studies of mammals and birds. This observation has important implications for uncovering the mechanisms of molecular evolution and warns against assuming that related lineages will share the same substitution rate (a local molecular clock) in order to date evolutionary divergences from DNA sequences.

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  • The predicted correlation of generation time with mutation rate has been supported by studies comparing rates of molecular evolution with generation time (or body size) across vertebrate species.

    “The predicted correlation of generation time with mutation rate 24 has been supported by studies that compare the rates of molecular evolution with generation time (or its correlate, body size) across a range of genes for several vertebrate species 35,37-39 .”

    From The modern molecular clock (2003) · cites this paper as [38]

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Research works printed but not linked: 5

  1. ERNST, C. H., and R. W. BARBOUR. 1989. Turtles of the world. Smithsonian Institution Press, Washington.
  2. HARLESS, M., and H. MORLOCK. 1979. Turtle perspectives and research. John Wiley, New York.
  3. HEATWOLE, H. 1999. Sea snakes. University of New South Wales (UNSW) Press, Sydney.
  4. HUBERT, J. 1985. The origin and development of oocytes. Pp. 41-74 in C. GANS, F. BILLET, and P. F. A. MADERSON, eds. Biology of the Reptilia: development A. John Wiley & Sons, New York.
  5. MILLER, J. D. 1997. Reproduction in sea turtles. Pp. 51-82 in P. L. LUTZ and J. A. MUSICK, eds. The biology of sea tur- tles. CRC Press, Boca Raton.

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Authors
Bromham, L.
Affiliations
University of Sussex (GB)
Corresponding author
Bromham, Lindell
Venue
Molecular Biology and Evolution
Published
2002-03-01
Volume
19
Issue
3
Pages
302-309
ISSN
  • 0737-4038 (ISSN-L)
  • 1537-1719
OpenAlex
W2152489289
Cited by
142
References
64
Citations by year
2026: 5 · 2025: 5 · 2024: 1 · 2023: 2 · 2022: 3 · 2021: 4 · 2020: 3 · 2019: 5 · 2018: 5 · 2017: 4 · 2016: 4 · 2015: 3 · 2014: 1 · 2013: 11 · 2012: 4
FWCI
9.56
Type
journal article
Language
en
Open access
Locations
  • Molecular Biology and Evolution (publishedVersion)
  • PubMed (publishedVersion)
  • Figshare (submittedVersion, cc-by)
Topics
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Evolution and Paleontology Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Evolution and Genetic Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Phylogenetic Studies
Keywords
molecular clock, molecular evolution rate, life history, body size, reptiles, phylogenetic bias, age at maturity, clutch size, cytochrome b, c-mos, turtles, lizards, snakes, crocodiles, tuatara, divergence time estimation
MeSH terms
Aging, Animals, Body Constitution, Cytochrome b Group, Environment, Litter Size, Models, Genetic, NAD, Phylogeny, Reptiles, Sexual Maturation, Species Specificity, Time Factors, Mutagenesis, Proto-Oncogene Proteins c-mos, Evolution, Molecular

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