Cues

... or chemorepulsive stimuli, detected by receptors in the growth cone, direct the growth of the axon towards its target skeletal muscle. Long range cues are usually diffusible signals while short range cues are usually contact –mediated. Once the axons of the motor neurons reach the tissues they ...

See entire post

... would be more attracted to the ones with the most yellow, since they blend in better? Do pill bugs choose mates, then? I doubt it's through visual cues somehow. To get the kind of change in allele frequencies you want, you need a selective pressure e.g. a predator that has a harder time finding ...

See entire post

... of a whole new multi-celled individual, against a simple mobile cell that does not on its own move all that far, following basic chemical cues to do a not-very-complicated job.

See entire post

... no women cannot make sperm *shudders*. But I suppose theoretically if one were to take an immature egg cell and expose it to certain chemical cues and then nurture it...a sperm cell could be made. Yes, much like the sperm-from-stem cell experiment that Darby speaks of.

See entire post

... multipotent immortalized stem cells will be used to create a multi-component bony organ in vitro, by providing appropriate spatial and temporal cues to direct these stem cells to acquire different fates in the forming organ. Hematopoietic stem cells will be subsequently introduced into the multicomponent ...

See entire post