identity by descent Identity by descent Identity by descent identity by descent identity by descent identical-by-descent identity by descent identical-by-descent Identity by descent identical-by-descent identity by descent identity by descent Identity by descent identity by descent IBD identical by descent identical-by-descent identity by descent Identity by descent identical-by-descent Identity by descent identity by descent IBD identity by descent Wikipedia article on identity by descent identity by descent identity by descent identity by descent identical by descent identity by descent identity by descent identity by descent identity by descent identical by descent identity by descent identity by descent identity by descent Identity by descent identity by descent identity by descent Identity by descent by descent identity by descent identity by descent identity by descent IBD identity by descent identical by descent identical by descent by descent Identity by descent identity by descent identity by descent identity by descent identity by descent identity by descent identity by descent “identity by descent” Identity by descent Identity by descent identity by descent identity by descent identity by descent identity by descent identical-by-descent identity by descent Identity by descent Identity by descent identity by descent identity by descent identity by descent identical-by-descent Identity by descent