Results 11 to 20 of about 194,620 (266)

Null hypotheses for developmental evolution [PDF]

open access: yesDevelopment, 2020
ABSTRACT How much evolutionary change in development do we expect? In this Spotlight, we argue that, as developmental biologists, we are in a prime position to contribute to the definition of a null hypothesis for developmental evolution: in other words, a hypothesis for how much developmental evolution we expect to observe over time ...
Samuel H. Church, Cassandra G. Extavour
openaire   +2 more sources

Puberty and the Evolution of Developmental Science [PDF]

open access: yesJournal of Research on Adolescence, 2019
In recent decades, theoretical and methodological advances have operated synergistically to advance understanding of puberty and prompt increasingly comprehensive models that engage with the temporal, psychosocial, and biological dimensions of this maturational milepost.
Carol M. Worthman   +2 more
openaire   +3 more sources

EVOLUTION AND BIFURCATION OF DEVELOPMENTAL PROGRAMS [PDF]

open access: yesEvolution, 1982
The idea that development can tell us something about the organization of the diversity of life predates the establishment of Darwinian evolution. For example, Agassiz (1849) presented a very elaborate theory illustrating the parallelism between the hierarchical organization of life (immutable and a reflection of God's plan) and the sequential process ...
G, Oster, P, Alberch
openaire   +2 more sources

EVOLUTION OF EVOLVABILITY IN A DEVELOPMENTAL MODEL [PDF]

open access: yesEvolution, 2008
Evolvability, the ability of populations to adapt, can evolve through changes in the mechanisms determining genetic variation and in the processes of development. Here we construct and evolve a simple developmental model in which the pleiotropic effects of genes can evolve.
Jeremy, Draghi, Günter P, Wagner
openaire   +2 more sources

Developmental evolution: This side of paradise [PDF]

open access: yesCurrent Biology, 1999
It has long been appreciated that the evolution of snakes involved the loss of limbs and axis elongation, but their developmental basis has been obscure. It has now been shown that alterations in the deployment of Hox genes and an early block in the formation of hindlimb primordia underpin these modifications.
Graham, Anthony, McGonnell, Imelda
openaire   +2 more sources

Developmental bias in the evolution of phalanges [PDF]

open access: yesProceedings of the National Academy of Sciences, 2013
Significance It has long been proposed that rules stemming from the mechanisms used during development can constrain the range of evolvable variations in a given form, but few empirical examples are known. We have focused on developmental processes determining proportions of phalanx size along individual digits (fingers/toes) of ...
Kathryn D, Kavanagh   +6 more
openaire   +2 more sources

A topological look into the evolution of developmental programs [PDF]

open access: yesBiophysical Journal, 2021
Rapid advance of experimental techniques provides an unprecedented in-depth view into complex developmental processes. Still, little is known on how the complexity of multicellular organisms evolved by elaborating developmental programs and inventing new cell types.
Somya Mani, Tsvi Tlusty
openaire   +4 more sources

Rpn11-mediated ubiquitin processing in an ancestral archaeal ubiquitination system

open access: yesNature Communications, 2018
Ubiquitin modification also occurs in archaea. Here, the authors characterize an archaeal ancestral ubiquitination system, present the crystal structure of the archaeal deubiquitinase Rpn11 from Caldiarchaeum subterraneum bound to ubiquitin and provide ...
Adrian C. D. Fuchs   +4 more
doaj   +1 more source

A vocabulary of ancient peptides at the origin of folded proteins

open access: yeseLife, 2015
The seemingly limitless diversity of proteins in nature arose from only a few thousand domain prototypes, but the origin of these themselves has remained unclear.
Vikram Alva   +2 more
doaj   +1 more source

Maternally regulated gastrulation as a source of variation contributing to cavefish forebrain evolution

open access: yeseLife, 2019
Sequential developmental events, starting from the moment of fertilization, are crucial for the acquisition of animal body plan. Subtle modifications in such early events are likely to have major impacts in later morphogenesis, bringing along ...
Jorge Torres-Paz   +2 more
doaj   +1 more source

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