Another way evolution can accelerate is the major exception to natural selection admitted by Darwin, and the one way species can be said to design themselves: Sexual Selection. The bird of paradise and mandrill are vivid examples of what can happen when female choice of "quality" males becomes...
Testosterone and cortisol are hormones expected to play a major role in competitive behaviours (i.e. aggression), and are related to rank and hierarchical stability. Through a non-invasive technique, we analyzed faecal testosterone (FTM1) and cortisol (FCM2) metabolites of dominant and subordinate...
Among all major groups of living and fossil euprimates, only the Malagasy lemuriforms, the Adapidae, and the New World monkeys now have no fossil record in the Oligocene of Egypt, making the Fayum area the most diverse in terms of primates of any region in the world....
Groups of mice were trained to obtain water from dispensers varying along two reward dimensions: volume and probability. The mice’s choices over the course of the experiment suggested an initial reliance on integrative rules, later displaced by a sequential rule, in which volume was evaluated ...
Describe the structural adaptations of the mammalian heart to its functions. Describe the three major anatomical advances or adaptations that occurred in the vertebrates and explain how each added to its success and size increase. Compare respiratory systems of the earthworm, frog, and squid, explaini...
groups. The aims of this study were two-fold. First, to evaluate the levels and extent of dietary shifts by black rhino and Grevy’s zebra in response to seasonal changes in resource availability across a regional climatic gradient. Second, to determine whether dietary shifts and the use of ...
We immunized two groups of horses with either S1 (anti-S1) or a mixture of S1, N, and SEM mosaic (anti-Mix) viral recombinant proteins. Horses reached a maximum anti-viral antibody level at 7 weeks following priming, and showed no major adverse acute or chronic clinical alterations. Two ...
The immune correlates of protection against infection and disease caused by SARS-CoV-2 are imperfectly understood (reviewed by8,9). Classically, neutralization by antibody, measured by reduction in plaque or infectious foci by authentic virus in vitro is considered a major component of protection. ...
Inflammatory processes have been suggested as a potential pathophysiological mechanism underlying the development of several major chronic diseases, including cardiovascular, metabolic and psychotic disorders1. Systemic inflammation is also one of the most studied pathways in the context of the social-to-bio...
Phylogenomic analyses and molecular signatures for the class Halobacteria and its two major clades: a proposal for division of the class Halobacteria into ... The Halobacteria constitute one of the largest groups within the Archaea. The hierarchical relationship among members of this large class, whic...