The end of prophase is marked by the beginning of the organization of a group of fibres to form a spindle and the disintegration of the nuclear membrane. The nucleolus, a rounded structure, shrinks and disappears. Mitosis begins at prophase with the thickening and coiling of the chromosomes. Prior to the onset of mitosis, the chromosomes have replicated and the proteins that will form the mitotic spindle have been synthesized. Each chromosome thus consists of two identical. When the chromosomes condense during cell division, they have already undergone replication. SpaceNext50 Britannica presents SpaceNext50, From the race to the Moon to space stewardship, we explore a wide range of subjects that feed our curiosity about space!.Learn about the major environmental problems facing our planet and what can be done about them! Saving Earth Britannica Presents Earth’s To-Do List for the 21st Century.Britannica Beyond We’ve created a new place where questions are at the center of learning.100 Women Britannica celebrates the centennial of the Nineteenth Amendment, highlighting suffragists and history-making politicians.COVID-19 Portal While this global health crisis continues to evolve, it can be useful to look to past pandemics to better understand how to respond today.Student Portal Britannica is the ultimate student resource for key school subjects like history, government, literature, and more.From tech to household and wellness products. Britannica Explains In these videos, Britannica explains a variety of topics and answers frequently asked questions.This Time in History In these videos, find out what happened this month (or any month!) in history.#WTFact Videos In #WTFact Britannica shares some of the most bizarre facts we can find.Demystified Videos In Demystified, Britannica has all the answers to your burning questions.Britannica Classics Check out these retro videos from Encyclopedia Britannica’s archives.Info-points (description buttons that can be placed in the panorama), embedded pictures, video and audio can be added to the ready virtual tour. We develop virtual tours which are suitable for all browsers, support both Flash and HTML5 technologies and are compatible with different mobile devices and virtual reality glasses (including Samsung Gear VR). Our team creates high-quality 360° photo-panoramas with resolution from 1 to 3 gigapixel and carries out professional post-processing and corrections of any complexity. Info-points (description buttons that can be placed in the panorama), embedded pictures, video and audio can be added to the virtual tour. Ready 360° photo-panoramas cover up all the space around the camera 360x180 degrees without black spots at both nadir and zenith viewing angle. Panoramic video covers up all the space around the camera 360x180 degrees without black spots at both nadir and zenith viewing angle. For aerial shooting we usually use drones with the fully gyro-stabilized unique suspension. We use different types of moving and fixed objects (tripods, monopods, cars, helicopters, building cranes, etc.) to record videos. We develop virtual tours which are suitable for all browsers, support both Flash and HTML5 technologies and are compatible with different mobile devices and virtual reality headsets (including Samsung Gear VR). Our team creates high-quality 360° photo-panoramas with 35000x17500 pixels resolution (in the equidistant projection) and carries out professional post-processing and corrections of any complexity.
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