Sentences with phrase «of adaptive traits»

Our study reconstructs the genetic and adaptive history of a neglected episode of the African Diaspora and illustrates the impact of recent admixture on the diffusion of adaptive traits across human populations.

These findings provide new insights on the genetic mechanisms underlying the evolution of adaptive traits.

Researchers found the plants likely acquired many of these adaptive traits prior to their movement into colder regions.

Not exact matches

In this regard, we described two types of biologically - based teleologies: (i) an external teleology, where there is a deliberate and conscious setting of goals, those that are generally found among human beings and possibly in higher animals; and (ii) an internal teleology, where there is no self - directed or conscious goal - seeking on the part of living organisms, such as in the natural selection of favorable traits among biologically adaptive species.

Thus, the natural selection of adaptive species in biological evolution may be looked upon as an internalized teleology, since there is no «conscious» (or self - directed) attempt to choose «desirable traits» on the part of mutating organisms.

Evolution is in essence weeding out less adaptive traits via death (or lack of breeding).

«This study provides insight into the stepwise evolution of an ecologically important trait (resistance to prey toxins), and revealed that the adaptive benefit of changes to individual components of the trait were contingent on antecedent changes in other components,» said Jay Storz, the Susan J. Rosowski Professor of Biology at the University of Nebraska who was not involved in the research.

Maintenance of biodiversity in a rapidly changing climate will depend on the efficacy of evolutionary rescue, whereby population declines due to abrupt environmental change are reversed by shifts in genetically driven adaptive traits.

The study used an age - and IQ - matched sample of school - aged youth diagnosed with ASD to assess sex differences according to the standard clinical tests including the Autism Diagnostic Observation Schedule (ADOS) and the Autism Diagnostic Interview - Revised (ADI - R), as well as parent reported autistic traits and adaptive skills.

The murkiness of past selection pressures makes it challenging to say that any trait was ever truly adaptive.

Among its recommendations: encourage local farmers to maintain local types of livestock; share breeds across borders (particularly when breeds are likely to be suited to specific regions due to certain adaptive traits, such as a need for less water); and establish a gene bank — similar to the regional seed banks that preserve crop diversity — to maintain this genetic heritage.

«I think it's an elegant demonstration of a critically important phenomenon: linking of a specific trait to a specific adaptive advantage,» says Molly Jahn, a geneticist at the University of Wisconsin, Madison.

Among his hypotheses was that the birds were successful in their adaptive radiation — the evolutionary diversification of morphological, physiological and behavior traits — because they were early colonizers of the islands.

Anthropomorphism is an adaptive trait that enhanced our ancestors» chances of survival, he adds.

«The novel use of plastics in the nests of bees could reflect the ecologically adaptive traits necessary for survival in an increasingly human - dominated environment,» MacIvor said.

Yet capricious though it may seem, love is likely to be an adaptive trait, one that arose early in the evolution of our lineage.

It is still uncertain whether the observed changes represent adaptive compensation at the cellular level or the direct expression of a primary genetic trait.

These results imply that predators are driving the evolution of phenotypic diversity in symbiotic defense traits in this system, and that divergence in defensive morphology may provide ecological opportunities that help to fuel the adaptive radiation of this genus of midges on goldenrods.

Can adaptive evolution or behaviour lead to diversification of traits determining a trade - off between foraging gain and predation risk?

To address this, we present a framework for assessing three dimensions of climate change vulnerability, namely sensitivity, exposure and adaptive capacity; this draws on species» biological traits and their modeled exposure to projected climatic changes.

Yet the sex - biased genes that underlie these sex - specific traits are under strong selective pressure, and as a result of adaptive evolution they often become divergent.

Our results suggest that gene dosage is an adaptive trait that confers phenotypic plasticity among natural Leishmania populations by rapid down - or upregulation of transporter proteins to limit the effects of environmental stresses, such as drug selection.

Researchers concluded that all traits now seen Yakutian horses are the product of very fact adaptive processes.

The first whole genome analysis of an octopus reveals unique genomic features that likely played a role in the evolution of traits such as large complex nervous systems and adaptive camouflage.

One of the researchers observed that resilience, often described as a trait, is instead an adaptive process; one that is helped by relationships.

On top of being quite pricey (between $ 4,115 and $ 7,670, depending on which version you're upgrading to F - Sport spec), but you don't really get much for your money outside of more distinctive bodywork, sports seats, a revised dashboard display and sports - tuned adaptive suspension that, if we're being honest, doesn't really suit the more relaxed traits of the Lexus GS.

This doggedness had revealed itself early on, an adaptive trait for a would - be toddler who had struggled to walk until well past the age of two.

Like already noted, the race traits are inherited, and, apparently, several of them manifested an adaptive character long ago.

NATURAL SELECTION — Differential survival and reproduction among members of a population or species in nature, due to variation in the possession of adaptive genetic traits.

Thanks for visiting Dot Earth today and I hope you'll sift back for posts on enduring issues and concepts like the «population cluster bombs» that are the real peril from high fertility rates; evidence that humanity's amazing, sometimes - exasperating diversity is perhaps our species» most adaptive trait; and the idea that when numerical goals seem out of reach, there's much that can be accomplished by fostering traits in society that guarantee some progress.

However, adaptive evolution of populations at the warmer range limit of a species will be limited by the amount of genetic variation and covariation within populations for traits affecting climate tolerance (Hoffmann and Sgro, 2011; Shaw and Etterson, 2012).

Avoidant and ambivalent attachment patterns also have different adaptive values for boys and girls, in the context of same - sex competition in the peer group: in particular, the competitive and aggressive traits related to avoidant attachment can be favored as a status - seeking strategy for males.

This is, in the language of evolutionary psychology, called an adaptive trait.

Hot or not?A considerable amount of research has shown that women prefer more masculine traits (e.g., facial masculine traits like a strong jawline) when they are ovulating (and most fertile), but prefer less masculine traits (e.g., signs of less aggressive behaviors) when they are less fertile.5 Scientists believe that this change in preference is adaptive, as strongly masculine traits may signal that the man has good genes.

Our internal wiring does its best to prevent us from opening our hearts to those we fear will hurt us emotionally, let us down, or leave us, and this — in the language of evolutionary psychology — may be called an adaptive trait!

Like conventional personality traits, Trait EI represents a qualitative style of behavior and experience that is adaptive in some contexts but not in others; or in other words qualities or traits that relate directly to emotional functioning (e.g. assertiveness, empathy).

Supporting the notion of cultural traits as evolutionary adaptations, recent cross-national evidence shows that cultural values of individualism and collectivism serve an adaptive, «anti-pathogen» function, protecting vulnerable geographical regions from increased spread of disease - causing pathogens via the promotion of collectivistic social norms, such as conformity and parochialism (Fincher et al. 2008).

This dual inheritance theory of human behaviour proposes that cultural traits are adaptive and they evolve and influence the social and physical environments under which genetic selection operates (Boyd & Richerson 1985).

Recent topics of interest in positive psychology have been investigating how to help adolescents develop positive personality traits related to school, social life, family, and general development, as well as ways for training educators on how to cultivate optimal development and teach adaptive aspects of human nature.

According to Benard, «we are all born with innate resiliency, with the capacity to develop the traits commonly found in resilient survivors: social competence (responsiveness, cultural flexibility, empathy, caring, communication skills, and a sense of humor); problem - solving (planning, help - seeking, critical and creative thinking); autonomy (sense of identity, self - efficacy, self - awareness, task - mastery, and adaptive distancing from negative messages and conditions); and a sense of purpose and belief in a bright future (goal direction, educational aspirations, optimism, faith, and spiritual connectedness)» (Benard, 1991).