Phenotypic plasticity is a way in which organisms can harmonize the conflict between stability and variability that is, the way in which the morphological expression of a given genotype varies under different environmental conditions.
A possible interpretation might be that Carolina bays are not only focal points for groundwater recharge, as suggested by Grant et al. (1998), but also a morphological expression of fluid seepage from depth toward the atmosphere.
The epidermis is the morphological expression of the changes in the subjacent dermis.
However, it is also possible that these changes may be the morphological expression of some of the changes in the cell surface membrane that occur in malignant transformation.
Earliest cervids could have been physiologically qualified to browse and graze, but the morphological expression of this facultative mixed condition would have depended on environmental conditions.
The doughnut is the morphological expression of nucleosome disassembly, for nucleosome-destabilizing histones (H4K8ac and H4K16ac, H3K9me2) co-localize with it (De Vries et al., 2012).
In canine cutaneous histiocytoma, in the same way, a lymphocytic infiltrate represents the morphological expression of one antitumor immune response, which correlates with observations of spontaneous regression "in vivo" [ 76, 85].
Recombinations between the A and B genomes can occur, and it can be frequent in triploid hybrids, while it might lead to unbalanced genome transmission with respect to the parental species [ 66, 67], justifying variations in AAB genomes, morphological expression of A and B characters, and no addictiveness, as hybrids may carry different recombinant A and B chomossomes (e.g. AB and BA) [ 66].
In summary, heterochrony produces two forms of morphological expression: paedomorphosis, the retention of ancestral juvenile characters by later ontogenetic stages of descendants and peramorphosis, new descendant characters produced by additions to the ancestral ontogeny.
The objectives of the present work were to evaluate the morphological expression and clinical relevance of several MMPs and TIMPs of biological importance in invasive ductal carcinomas of the breast, by using the tissue microarray (TMA) technique, which has allowed us to process a large number of tissue specimens for a wide range of protein determinations (Kononen et al, 1998; Camp et al, 2000).
