(4 of 4) Cell dividing: mother cell divides resulting in two daughter cells each with its own nucleus.
(2 of 4) Cell dividing: chromosomes are visible and lined up at the plane of division.
(3 of 4) Cell dividing: chromosomes are being pulled toward the cellular poles.
Electron micrograph of the 10-nm fiber.
Electron micrograph of the 30-nm fiber.
Scanning electron micrograph of the head a normal Drosophila.
Organelles in a typical animal cell.
An electron micrograph of a mouse liver cell. Magnification approximately 12,000 times.
Scanning electron micrograph of the head a Drosophila mutant for the antennapedia gene.
This was one of the original photos that Roberts and his group used for analyzing their results.