The question that follows is the extent differences in head crest allometry (and the color of male dorsal fins) are genetic or plastic in origin.
Without an adequate understanding of the history of connectivity among populations, interpreting an apparent lack of response to selection or a response that might be plastic in origin would subsequently be difficult.
One of the most interesting prototypes is a composite panel car door, which is made of foam and plastic of vegetable origin.
Just as an example, I used the skin from an alligator killed by IBAMA, the Brazilian environmental protection agency, and plastic from sustainable origin.
However, these three studies represent a very small amount of data relative to the number of studies reporting recent changes in size, and further investigation of the origin (plastic and/or genetic) and nature (adaptive or not) of size declines is needed.
Variation between rearing environments for clusters 1 to 6 were marginally correlated between MR and GRB (r = 0.646, F = 7.293 and p = 0.054), suggesting similar directionality in plastic response between origins to environmental conditions for these genes.
Actually, the present paper was originally part of the paper "Elastic, not plastic species: Frozen plasticity theory and the origin of adaptive evolution in sexually reproducing organisms" Biol.
The origin of plastic relaxation is probably the inclusion of a dislocation network.
Our results are in qualitative agreement with experimental studies and elucidate the microstructural origin of plastic hardening in this class of materials.
Two series of bituminous coals of different rank, geographic origin and plastic properties were subjected to thermal treatment up to 1000 °C in a nitrogen atmosphere at two heating rates (3 and 10 °C min−1), using two thermobalances of different design.
