Testing on the surviving giant panda cub of the twins born on August 22 at the National Zoo has confirmed that it's a boy and the offspring of Tian Tian.
His recently deceased twin brother, the smaller of the two cubs, was also male and the son of Tian Tian. The cubs were fraternal twins
The gender of the cubs was confirmed when a Y chromosome was found in both cubs during DNA testing. Scientists at Smithsonian Conservation Biology Institute's Center for Conservation and Evolutionary Genetics used DNA markers to compare the cubs' genotypes to their two potential father Read more...
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Source: Mashable http://ift.tt/1LAaWLU
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