tapetoretinal degeneration degeneration of the pigmented layer of the retina. transneuronal degeneration atrophy of certain neurons after interruption of afferent axons or death of other neurons to which they send their efferent output.apetoretinal degeneration degeneration of the pigmented layer of the retina. transneuronal degeneration atrophy of certain neurons after interruption of afferent axons or death of other neurons to which they send their efferent output.
How accurate is the DNA Originsâ¢ test? The DNA Originsâ¢ test provides your ancestral proportions based on years of collaborative research of populations representing 4 ancestral groups. This research identified 144 informative markers in our DNA, called Ancestry Informative Markers (AIMs).
Family Tree DNA is the pioneer and the world's largest DNA testing company in the new field of genetic genealogy. If you are looking for that long-lost relative or ancestor, or if you feel that some day, someone may use a DNA repository to look for long-lost relatives, you should consider doing this simple DNA test.ales can test their Y-DNA to determine the origin of their paternal line, including the possibility of Jewish and Cohanim ancestry. Note that the Y-DNA strictly checks the paternal line, with no influence from any females along that line.