Temperature predicts the rate of molecular evolution in Australian Eugongylinae skinks

Evolution ◽  
2021 ◽  
Author(s):  
Jeremias Ivan ◽  
Craig Moritz ◽  
Sally Potter ◽  
Jason Bragg ◽  
Rust Turakulov ◽  
...  
Keyword(s):  
Molecular Evolution ◽  
Rate Of Molecular Evolution

scholarly journals Sociality and the Rate of Molecular Evolution

2005 ◽  
Vol 22 (6) ◽  
pp. 1393-1402 ◽  
Author(s):  
Lindell Bromham ◽  
Remko Leys
Keyword(s):  
Molecular Evolution ◽  
Rate Of Molecular Evolution

scholarly journals Seed Banks Alter the Rate and Direction of Molecular Evolution in Bacillus subtilis

2021 ◽  
Author(s):  
William R. Shoemaker ◽  
Evgeniya Polezhaeva ◽  
Kenzie B. Givens ◽  
Jay T. Lennon
Keyword(s):  
Bacillus Subtilis ◽  
Molecular Evolution ◽  
Seed Bank ◽  
Negative Selection ◽  
Evolutionary Dynamics ◽  
Genetic Manipulation ◽  
Seed Banks ◽  
Rate Of Molecular Evolution ◽  
Over Time ◽  
Growth And Reproduction

Fluctuations in the availability of resources constrains the growth and reproduction of individuals, which in turn effects the evolution of their respective populations. Many organisms are able to respond to fluctuations by entering a reversible state of reduced metabolic activity, a phenomenon known as dormancy. This pool of dormant individuals (i.e., a seed bank) does not reproduce and is expected to act as an evolutionary buffer, though it is difficult to observe this effect directly over an extended evolutionary timescale. Through genetic manipulation, we analyze the molecular evolutionary dynamics of Bacillus subtilis populations in the presence and absence of a seed bank over 700 days. We find that the ability to enter a dormant state increases the accumulation of genetic diversity over time and alters the trajectory of mutations, findings that are recapitulated using simulations based on a simple mathematical model. While the ability to form a seed bank does not alter the degree of negative selection, we find that it consistently alters the direction of molecular evolution across genes. Together, these results show that the ability to form a seed bank affects the direction and rate of molecular evolution over an extended evolutionary timescale.

scholarly journals Bayesian Coalescent Analysis Reveals a High Rate of Molecular Evolution in GB Virus C

2008 ◽  
Vol 66 (3) ◽  
pp. 292-297 ◽  
Author(s):  
Camila M. Romano ◽  
Paolo M. de A. Zanotto ◽  
Edward C. Holmes
Keyword(s):  
Molecular Evolution ◽  
High Rate ◽  
Gb Virus C ◽  
Coalescent Analysis ◽  
Rate Of Molecular Evolution ◽  
Virus C

scholarly journals A Generation Time Effect on the Rate of Molecular Evolution in Invertebrates

2010 ◽  
Vol 27 (5) ◽  
pp. 1173-1180 ◽  
Author(s):  
Jessica A. Thomas ◽  
John J. Welch ◽  
Robert Lanfear ◽  
Lindell Bromham
Keyword(s):  
Molecular Evolution ◽  
Generation Time ◽  
Time Effect ◽  
Rate Of Molecular Evolution

Rates of Albumin Evolution in Parrots (Aves, Psittaciformes)

1992 ◽  
Vol 40 (3) ◽  
pp. 313 ◽  
Author(s):  
PR Baverstock ◽  
L Christidis ◽  
M Krieg ◽  
J Birrell
Keyword(s):  
Amino Acid ◽  
Molecular Evolution ◽  
Amino Acid Sequence ◽  
Sequence Divergence ◽  
Modern Distribution ◽  
Rate Of Molecular Evolution ◽  
Microcomplement Fixation ◽  
Amino Acid Sequence Divergence ◽  
Lines Of Evidence

A number of lines of evidence suggest that the rate of molecular evolution in birds is slower than in other vertebrates. This hypothesis was tested by measuring the extent of amino-acid sequence divergence in albumin among species of parrots by means of microcomplement fixation. This group was chosen because its modern distribution is strongly suggestive of a Gondwanan origin. The results show that the intercontinental albumin distances are well below those expected for a Gondwanan group. These data are in accord with the hypothesis that birds have a slower rate of molecular evolution, although other explanations are possible.

scholarly journals The genome as a life-history character: why rate of molecular evolution varies between mammal species

2011 ◽  
Vol 366 (1577) ◽  
pp. 2503-2513 ◽  
Author(s):  
Lindell Bromham
Keyword(s):  
Life History ◽  
Molecular Evolution ◽  
Dna Sequences ◽  
Small Body ◽  
Rate Variation ◽  
Mammal Species ◽  
Range Restriction ◽  
High Fecundity ◽  
Rate Of Molecular Evolution ◽  
The Impact

DNA sequences evolve at different rates in different species. This rate variation has been most closely examined in mammals, revealing a large number of characteristics that can shape the rate of molecular evolution. Many of these traits are part of the mammalian life-history continuum: species with small body size, rapid generation turnover, high fecundity and short lifespans tend to have faster rates of molecular evolution. In addition, rate of molecular evolution in mammals might be influenced by behaviour (such as mating system), ecological factors (such as range restriction) and evolutionary history (such as diversification rate). I discuss the evidence for these patterns of rate variation, and the possible explanations of these correlations. I also consider the impact of these systematic patterns of rate variation on the reliability of the molecular date estimates that have been used to suggest a Cretaceous radiation of modern mammals, before the final extinction of the dinosaurs.

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