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homing
The possible reasons for genetic similarity of resident and anadromous forms of Dolly Varden chars inhabiting reservoirs of a definite island are considered (the founder effect, homing, limited migration).
      
A Mutational Analysis of DNA Binding and Cleavage by the Homing Endonuclease PI-SceI
      
We have carried out an extensive mutational analysis of PI-SceI, the best studied intein-like homing endonuclease of the LAGLIDADG family, to find out which amino acid residues are involved in substrate binding and processing.
      
A new mechanism of the phosphodiester bond cleavage, which is common for the Serratia marcescens and I-PpoI nucleases and differs from the known functioning mechanism of the restriction and homing endonucleases, was proposed.
      
The observed pattern of genetic differentiation was probably caused largely by genetic drift under the conditions of a limited gene flow because of homing (which is typical of the Dolly Varden) and the presence of isolated nonanadromous populations.
      
In this work the signal path is determined using a modified ray-tracing technique together with a homing-in method.
      
Previous work indicates desialylation of these lymphocytes' outer cell membrane results in altered homing, to bone marrow, away from mucosa.
      
This aspect is further highlighted by the observation that DES also decrease proliferation, differentiation, and homing of endothelial progenitor cells, which are believed to contribute to reendothelialization after stent implantation.
      
An immunotoxic effect of the compound on the cells of Peyer's patches or an impairment of their homing tendency has been postulated.
      
inoculation, probably due to different homing of the cells.
      
The guidance principle of the visual homing is proven to be a visual potential function with an equilibrium point located at the goal position.
      
Natterjack toad conservation needs to take into account the high fidelity to a breeding site and the reduced breeding dispersal and homing ability of these animals.
      
Riverine spawning and reproductive segregation in a lacustrine cyprinid species flock, facilitated by homing
      
Long distance migration and species-specific spawning sites suggest that homing may have facilitated reproductive isolation and speciation.
      
A fine-tuning between homing and gonad development is suggested since females reach spawning maturity only as they arrive at the spawning grounds.
      
These data show that sand martins are able to determine the correct homing direction inside a probably familiar area.
      
The response over longer distances indicates difficulties in determining the appropriate homing course at takeoff.
      
In experimental situation I simulating the wet season (uniformly humid arenas) food searching paths were erratic and homing paths direct.
      
In situation II simulating the dry season (dry arenas with a humidified disk) the sinuosity of the searching paths increased and the speed decreased when workers moved from the dry arenas to the humidified disks; homing paths were again direct.
      
The homing behaviour of free-living birds has rarely been systematically investigated, and so it is difficult to give a satisfactory comparative picture.
      
 

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