Results 51 to 60 of about 7,917 (185)

Full mitochondrial genome sequences of two endemic Philippine hornbill species (Aves: Bucerotidae) provide evidence for pervasive mitochondrial DNA recombination

open access: yesBMC Genomics, 2011
Background Although nowaday it is broadly accepted that mitochondrial DNA (mtDNA) may undergo recombination, the frequency of such recombination remains controversial.
Bleidorn Christoph   +2 more
doaj   +1 more source

Molecular detection and genetic diversity of avian haemosporidian parasites in Iran. [PDF]

open access: yesPLoS ONE, 2018
BACKGROUND:The mobility of birds across or between continents exposes them to numerous vectors that have the potential to transmit pathogens and spread them into new regions. A combination of rich species diversity of birds along with the small amount of
Leila Nourani   +3 more
doaj   +1 more source

Mitochondrial Dna Replacement Versus Nuclear Dna Persistence [PDF]

open access: yes, 2006
In this paper we consider two populations whose generations are not overlapping and whose size is large. The number of males and females in both populations is constant. Any generation is replaced by a new one and any individual has two parents for what concerns nuclear DNA and a single one (the mother) for what concerns mtDNA.
arxiv   +1 more source

Co-evolution of the mitotic and meiotic modes of eukaryotic cellular division [PDF]

open access: yesPhysical Review E 98 (2018), 032409, 2018
The genetic material of a eukaryotic cell comprises both nuclear DNA (ncDNA) and mitochondrial DNA (mtDNA). These differ markedly in several aspects but nevertheless must encode proteins that are compatible with one another. Here we introduce a network model of the hypothetical co-evolution of the two most common modes of cellular division for ...
arxiv   +1 more source

Using age‐ratios to investigate the status of two Siberian Phylloscopus species in Europe

open access: yesIbis, Volume 167, Issue 3, Page 632-645, July 2025.
Distinguishing between vagrancy and regular migration has proved to be challenging as vagrants may, in theory, act as pioneers in the establishment of new migration routes. Because migratory songbirds tend to follow the same orientation and migration route throughout their lives, age assessment can help to distinguish individuals which have already ...
Paul Dufour   +31 more
wiley   +1 more source

A Brief Review of Non-Avian Reptile Environmental DNA (eDNA), with a Case Study of Painted Turtle (Chrysemys picta) eDNA Under Field Conditions

open access: yesDiversity, 2019
Environmental DNA (eDNA) is an increasingly used non-invasive molecular tool for detecting species presence and monitoring populations. In this article, we review the current state of non-avian reptile eDNA work in aquatic systems, and present a field ...
Clare I. M. Adams   +3 more
doaj   +1 more source

The avian tectorial membrane: Why is it tapered? [PDF]

open access: yesAIP Conf. Proc. 1703, 080005 (2015), 2015
While the mammalian- and the avian inner ears have well defined tonotopic organizations as well as hair cells specialized for motile and sensing roles, the structural organization of the avian ear is different from its mammalian cochlear counterpart. Presumably this difference stems from the difference in the way motile hair cells function.
arxiv   +1 more source

Ancient DNA & stable isotope profiling of fossil eggshell [PDF]

open access: yes, 2012
Eggshell is frequently encountered within palaeontological and archaeological deposits and due to various chemical and physical properties, it is highly valued as a substrate for geochronology, palaeodietary and palaeoecological applications. Despite the
Oskam, Charlotte
core   +1 more source

Discordance Between Mitochondrial and Nuclear Contact Zones Within Antelope Ground Squirrels (Ammospermophilus) [PDF]

open access: yes, 2020
A common biogeographic pattern found in many co-distributed species along the Baja California peninsula is the genetic divergence in the Vizcaíno Desert.
Gray, Shannon
core  

Large-scale structure of brown rat (Rattus norvegicus) populations in England: effects on rodenticide resistance [PDF]

open access: yes, 2015
The brown rat (Rattus norvegicus) is a relatively recent (
Adams, Sally   +6 more
core   +2 more sources

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