The classical example of thermionic emission is the emission of electrons from a hot cathode into a vacuum (also known as thermal electron emission or the Edison effect) in a vacuum tube. The hot cathode can be a metal filament, a coated metal filament, or a separate structure of metal or carbides or borides of transition metals.
Low confidence regions are areas for which there s a small amount of DNA evidence found in your sample. All ethnicities with predicted percentages of less than 4.5% appear as low confidence regions. Inferior complex is low complex .
Similarly, Y chromosome testing traces only one line of a personâs male ancestry, starting with a manâs father, his paternal grandfather, paternal great grandfather, and so forth. Another strategy for ancestry tracking is admixture testing. This kind of test focuses on the 22 pairs of nonsex chromosomes in every cell. Since one of the chromosomes has been inherited from the personâs mother and one from the father, they contain recombined segments of DNA from all of a personâs ancestors.