Saturday, February 7, 2015

This is the reconstruction of the origin of Snowflake made by the scientists of the Institute of Ev

Albino family to mess | The Voice of Africa
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Sometime in the sixties, in a jungle of Equatorial Guinea, a gorilla reached adulthood (about seven or eight years) and left the group which had grown up surrounded psalmul lui david by other young females under the under a dominant male, to find another psalmul lui david one that would provide offspring. The random (or perhaps the attraction, who knows?) That was integrated into a group that led one of his uncles. From there, nature did the rest. The fact that uncle and niece are paired, however, was determined to ensure that one of the genes that predispose to albinism, from a common ancestor and present in their genomes, duplicate happened to his son, who became the first and only known albino gorilla.
This is the reconstruction of the origin of Snowflake made by the scientists of the Institute of Evolutionary Biology (CSIC-UPF) from the sequencing of its genome. The rest of the story, since 1966 a hunter shot down a couple of gorillas and possibly Uncle neboda- and discovered a baby albino hug his mother, until this albino gorilla died Barcelona psalmul lui david Zoo, ten years ago, become an iconic image of the city, is known to all.
The genome sequence of Snowflake was the third of its kind and the first born of a copy free. Once the genetic information, the researchers compared the two previous models, black gorilla, to find which genes could make a difference in pigmentation. They found a mutation SCL45A2, which also causes albinism in humans and other animals, but much less frequently.
"I'm of the generation of children psalmul lui david who went to the zoo to see the school and Snowflake is a joy to explain why it was albino," said researcher Thomas Marquis yesterday. The analysis of the genome has allowed parents found that 12% had Floquet inbreeding. This percentage is also compatible with a relationship between grandfather and grandson or between siblings, but for primatologists researchers and the most plausible explanation is that they were uncle and niece or lesser extent, aunt and nephew.
Kinship parents Snowflake has surprised scientists, because "never been able to find inbreeding in western gorillas," as detailed Javier Prado, co-author of the article published in BMC Genomics. This therefore psalmul lui david will reconsider policies conservation of the species psalmul lui david in captivity. The study also makes a big difference when it comes back to take an albino gorilla, a possibility that during a time pursued, but now discarded. "I do not need any genetic alteration, which analyze only the descendants have this mutation, a process psalmul lui david that is cheap and close them in a cage. To probabilities, psalmul lui david one in four children would be albino, "Marquis confirmed not to mention ethical issues involved. The zoo's curator of primates, Teresa Abelló, this possibility was ruled out completely: "We want to preserve the species in captivity and genetic variability is important."
The discovery of the albino gorilla psalmul lui david had such an impact psalmul lui david that in time they promote their matches to try to get another similar example. In total he had 21 children, 21 grandchildren and four great-grandchildren. psalmul lui david Currently, however, only three surviving children, eleven grandchildren and four great-grandchildren. Of these, the Barcelona Zoo has a good representation: there is a group with a daughter and two granddaughters, and one with two more grandchildren and great-granddaughter.
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