| sugar_glider | Дата: Суббота, 26.03.2011, 14:04 | Сообщение # 1 |
 Генералиссимус
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| White Face is not a color, rather a mutation of the stripes. On a white face sugar glider the bar that is under the sugar glider's ear is missing, giving the appearance of a white face. There will be no dots or traces of the bar at all. It also appears that the eye rings are lighter and/or broken. It is important to note that some joeys will not get the bar under their ear until they are about 5 days out of pouch. There are currently 2 theories that can explain the white face variation.
Theory #1- It is possible that more than one gene controls the white face variation. Due to the lack of studies in sugar glider genetics, we can only hypothesize how the gene(s) work. White face may in fact be a dominant gene, with a seperate modifier gene that acts similar to a switch to determine if the white face variation will be shown in the offspring. When the modifier gene is "on", the het for white face will show white face. When the modifier gene is "off", the joey will be normal in appearance, but still may carry the white face gene. If the "switch" is on the same chromosome as white face mutation, and very close, the "on" could almost always be inherited with white face, and the "off" almost always with normal/classic or wild type. This would explain why some "larger" breeders have claimed to produce white faces from two hets.
Theory #2- White face is dominate. If the white face is not showing, the glider does not carry the white face gene. This would mean that there are NO white face hets. It is believed by pairing several generations of solid white face gliders together, that you can "breed out" the gray gene. For example, if the sugar glider has 3 or more generations of solid white faces in his background, then those sugar glider will only produce white face offspring. So far this has proved true with 3rd generation pairing that have documented lines. White faces that only produce white faces no matter what they are paired to are considered "super white faces" or "super blondes". We have seen the white face mutation appear with many sugar glider colors, such as gray/classic, cinnamon, blonde, champagne, mosaic and white tip. So the white face does not always appear with the blonde coloration. As of December 2007, first generation white face blonde and white face gray sugar gliders are starting at around $350.00. Colors with white faces and white face gliders with consecutive full white face generations usually sell for more depending on the color, breeding, and number of white face to white face pairing in a glider background.
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