| Pressure for land has led to the canalization of rivers and an increased water flow. |
| This pattern may suggest some form of morphological stability due to selection, canalization, or a constraint operating on wing shape. |
| Physiological canalization may limit the number of phenotypes that can be produced in response to environmental variation. |
| Extensive canalization and a vast development of polders have been systematically carried out since the early 20th century. |
| It is fitted with a pipe to make the water flowing and a second one to blow out the the ais inside the canalization. |
| This last mechanism is known as canalization and can lead to the buildup of hidden or cryptic genetic variation. |
