Fuente: Caltech Today
Expuesto el: lunes, 17 de mayo de 2010 10:00
Autor: Caltech Today
Asunto: Flower Organ's Cells Make Random Decisions that Determine Size
| The sepals of the plant Arabidopsis thalianacommonly known as the mouse-eared cressare characterized by an outer layer of cells that vary widely in their sizes, and are distributed in equally varied patterns and proportions. Scientists have long wondered how the plant regulates cell division to create these patternsin other words, how it decides which and how many cells will be large, which slightly smaller, and which very small. Melding time-lapse imaging and computer modeling, a team of scientists led by biologists from Caltech has provided a somewhat unexpected answer to this question. |
