landmark based geometric morphometrics and comparison of meristic characters was used to understand potential differences between populations of waspi in mashkil and mokran basins. 97 specimens of waspies were caught (64 from mashkil river and 33 from sarbaz river). 14 landmarks were digitized on pictures taken from left side of specimens and meristic characters were counted. data were analyzed...

interleukin (il)-17-producing t helper (th)-17 cells have recently been explained as a distinct population  of  cd4+  t  cells which play an important  role in immunity against infectious agents. establishment of persistent phenotype of th17 cells and recognition of lineage-deviating factors are of most attractive goals in modern researches in immunology. although  il-6  and  tgf-β  are  freque...

Novel environments often impose directional selection for a new phenotypic optimum. Novel environments, however, can also change the distribution of phenotypes exposed to selection by inducing phenotypic plasticity. Plasticity can produce phenotypes that either align with or oppose the direction of selection. When plasticity and selection are parallel, plasticity is considered adaptive because ...

In this issue of Evolution, Medicine and Public Health, Lea and colleagues argue that there are major advantages to bringing together biomedical and evolutionary perspectives on plasticity. To develop this approach, they propose two contrasting scenarios for 'developmental plasticity as adaptation': that it reflects adjustments to resolve the effects of early 'constraints', or that it adjusts p...

We investigated the conditions under which plastic responses to density are adaptive in natural populations of Impatiens capensis and determined whether plasticity has evolved differently in different selective environments. Previous studies showed that a population that evolved in a sunny site exhibited greater plasticity in response to density than did a population that evolved in a woodland ...

Cellular plasticity is a state in which cancer cells exist along a reversible phenotypic spectrum, and underlies key traits such as drug resistance and metastasis. Melanoma plasticity is linked to phenotype switching, where the microenvironment induces switches between invasive/MITFLO versus proliferative/MITFHI states. Since MITF also induces pigmentation, we hypothesize that macrometastatic s...