Results 31 to 40 of about 451,806 (340)

Effect of migration in a diffusion model for template coexistence in protocells [PDF]

open access: yes, 2014
The compartmentalization of distinct templates in protocells and the exchange of templates between them (migration) are key elements of a modern scenario for prebiotic evolution.
Fontanari, Jose F., Serva, Maurizio
core   +2 more sources

Genetic instability and transitional cell carcinoma of the bladder

open access: yesBJU International, 2003
The development of cancer occurs in a stepwise fashion, with each step representing the mutation in one of several key genes. However, the mutation rate of somatic cells is too low to account for the number of mutations required for a cell to undergo carcinogenesis.
Catto, J, Meuth, M, Hamdy, F
openaire   +3 more sources

The occipital lateral plate mesoderm is a novel source for vertebrate neck musculature [PDF]

open access: yes, 2010
In vertebrates, body musculature originates from somites, whereas head muscles originate from the cranial mesoderm. Neck muscles are located in the transition between these regions.
Christ, B.   +9 more
core   +1 more source

A Nexus model of cellular transition in cancer

open access: yesBiological Research, 2018
The exact cause of cancer is one of the most immutable medical questions of the century. Cancer as an evolutionary disease must have a purpose and understanding the purpose is more important than decoding the cause.
Mukesh Yadav   +7 more
doaj   +1 more source

The parabolic Anderson model on the hypercube [PDF]

open access: yes, 2016
We consider the parabolic Anderson model $\frac{\partial}{\partial t} v_n=\kappa\Delta_n v_n + \xi_n v_n$ on the $n$-dimensional hypercube $\{-1,+1\}^n$ with random i.i.d. potential $\xi_n$.
Avena, Luca, Gün, Onur, Hesse, Marion
core   +3 more sources

Epigenetic regulation of photoperiodic flowering in plants

open access: yesThe Plant Genome, 2023
In response to changeable season, plants precisely control the initiation of flowering in appropriate time of the year to ensure reproductive success.
Shuangrong Liu   +3 more
doaj   +1 more source

The origins and physical roots of life’s dual – metabolic and genetic – nature [PDF]

open access: yes, 2017
This review paper aims at a better understanding of the origin and physical foundation of life’s dual – metabolic and genetic – nature. First, I give a concise ‘top-down’ survey of the origin of life, i.e., backwards in time from extant DNA/RNA/protein ...
De Tiège, Alexis
core   +2 more sources

A new and almost perfectly accurate approximation of the eigenvalue effective population size of a dioecious population: comparisons with other estimates and detailed proofs

open access: yesPeer Community Journal, 2023
The effective population size is an important concept in population genetics. It corresponds to a measure of the speed at which genetic drift affects a given population.
De Meeûs, Thierry, Noûs, Camille
doaj   +1 more source

Transition to chaos in models of genetic networks [PDF]

open access: yes, 2008
Randomly constructed networks of N elements governed by piecewise linear differential equations have been proposed as models for neural and genetic networks. In this model an element is labelled “on” if it is above a threshold, and “off” otherwise.
C. Hill   +3 more
openaire   +2 more sources

Reaction-diffusion equation for quark-hadron transition in heavy-ion collisions

open access: yes, 2015
Reaction-diffusion equations with suitable boundary conditions have special propagating solutions which very closely resemble the moving interfaces in a first order transition.
Bagchi, Partha   +3 more
core   +1 more source

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