| Pair rule, polarity, and gap genes are present, but they seem to have little or no role in segmentation. |
| Among the system properties governing the transition from nonpolarity to polarity a prominent parameter is the rate of autocrine ligand release. |
| The rocks generated during the Emeishan Basalts' terminal phase were magnetized during a reverse polarity field. |
| The best thing about this movie was that it reversed the polarity of our sympathy while also deepening it. |
| These visible alterations in chromosome structure do not affect polarity by altering transcription of key patterning genes. |
| Like Earth, the Sun has magnetic poles, but unlike Earth, the Sun's polarity is not constant. |
