Results 91 to 100 of about 1,753 (201)

Chromosomal gene movements reflect the recent origin and biology of therian sex chromosomes.

PLoS Biology, 2008
Mammalian sex chromosomes stem from ancestral autosomes and have substantially differentiated. It was shown that X-linked genes have generated duplicate intronless gene copies (retrogenes) on autosomes due to this differentiation.
Lukasz Potrzebowski, Nicolas Vinckenbosch, Ana Claudia Marques, Frédéric Chalmel, Bernard Jégou, Henrik Kaessmann   +5 more
doaj   +1 more source

Monotreme glucagon-like peptide-1 in venom and gut: one gene – two very different functions

, 2016
This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the ...
Forbes, Briony E, Myers, Mark A, Sexton, PM, Grutzner, F, He, Chuan, Myers, MA, Wong, N, Wong, Nicole, Sexton, Patrick M, Tsend-Ayush, E, Forbes, BE, Andrikopoulos, S, Myers, Mark, Wootten, Denise, He, C, Andrikopoulos, Sof, Tsend-Ayush, Enkhjargal, Wootten, D, Forbes, Briony, Grutzner, Frank, Sexton, Patrick, Forbes, Briony E.   +21 more
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New data on the Paleocene monotreme Monotrematum sudamericanum, and the convergent evolution of triangulate molars

, 2002
We describe an additional fragmentary upper molar and the first lower molar known of Monotrematum sudamericanum, the oldest Cenozoic (Paleocene) monotreme. Comparisons suggest that the monotreme evolution passed through a stage in which their molars were
Goin, F.J., Udrizar Sauthier, D.E., Balarino, L., Pascual, R   +3 more
core  

Ancient antimicrobial peptides kill antibiotic-resistant pathogens: Australian mammals provide new options.

PLoS ONE, 2011
BackgroundTo overcome the increasing resistance of pathogens to existing antibiotics the 10×'20 Initiative declared the urgent need for a global commitment to develop 10 new antimicrobial drugs by the year 2020. Naturally occurring animal antibiotics are
Jianghui Wang, Emily S W Wong, Jane C Whitley, Jian Li, Jessica M Stringer, Kirsty R Short, Marilyn B Renfree, Katherine Belov, Benjamin G Cocks   +8 more
doaj   +1 more source

105. MEIOTIC ACROBATS: MONOTREME SEX CHROMOSOME ORGANISATION DURING SPERMATOGENESIS

, 2010
Monotremes feature an extraordinarily complex sex chromosome system which shares extensive homology with bird sex chromosomes but no homology to sex chromosomes of other mammals (1,2,3).
A. Casey, T. Daish, F. Grutzner
core   +1 more source

Local Aspects of Avian Non-REM and REM Sleep

Frontiers in Neuroscience, 2019
Birds exhibit two types of sleep that are in many respects similar to mammalian rapid eye movement (REM) and non-REM (NREM) sleep. As in mammals, several aspects of avian sleep can occur in a local manner within the brain.
Niels C. Rattenborg, Jacqueline van der Meij, Gabriël J. L. Beckers, John A. Lesku   +3 more
doaj   +1 more source

Marsupial and monotreme cathelicidins display antimicrobialactivity, including against methicillin-resistant Staphylococcus

, 2017
With the growing demand for new antibiotics to combat increasing multi-drug resistance, a family of antimicrobial peptides known as cathelicidins has emerged as potential candidates.
Kuhn, Michael, Michael Kuhn, Sorrell, Tania, Yuanyuan Cheng, Cheng, Yuanyuan, Tania Sorrell, Julianne T. Djordjevic, Katherine Belov, Peel, Emma, Djordjevic, Julianne T., Emma Peel, Belov, Katherine   +11 more
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Coevolution of activating and inhibitory receptors within mammalian carcinoembryonic antigen families

BMC Biology, 2010
Background Most rapidly evolving gene families are involved in immune responses and reproduction, two biological functions which have been assigned to the carcinoembryonic antigen (CEA) gene family.
Kammerer Robert, Zimmermann Wolfgang
doaj   +1 more source

Heat Tolerances of Australian Monotremes and Marsupials [PDF]

Australian Journal of Biological Sciences, 1954
Heat tolerances of monotremes and marsupials have been compared by exposing the animals in a hot room, on different days for 7-hr periods, to various combinations of dry-bulb temperature ranging from 8'6° to 108·5°F with absolute humidity from 15 to 40 mm v.p.
openaire   +4 more sources

The private life of echidnas: using accelerometry and GPS to examine field biomechanics and assess the ecological impact of a widespread, semi-fossorial monotreme [PDF]

, 2016
The short-beaked echidna (Tachyglossus aculeatus) is a monotreme and therefore provides a unique combination of phylogenetic history, morphological differentiation and ecological specialisation for a mammal. The echidna has a unique appendicular skeleton,
Singh, S., Cooper, Christine E, Withers, Philip C., Singh, Surya, Freakley, Craig, Terrill, P., Cooper, Christine E., Terrill, Philip, Clemente, Christofer J, Freakley, C., Withers, Philip C, Clemente, C., Cooper, Christine, Clemente, Christofer J., Withers, Philip   +14 more
core   +1 more source