The wireless data exchange standard Bluetooth uses a variety of protocols. Core protocols are defined by the trade organization Bluetooth SIG. Add protocols have been adopted from other standards bodies. This article gives an overview of the core protocols and those adopted protocols that are widely used. The Bluetooth protocol stack is split in two parts: a controller stack containing the timing critical radio interface, and a host stack dealing with high level data.
DNA Origins is a unique test in that it gives you percentages of your ancestral makeup based on markers across your 22 pairs of autosomes (non-sex chromosomes); therefore, it takes into account contributions from your full spectrum of ancestors.
21.1 Genetic factors and hormones that determine gender. Genetic factors: introduction. In the nucleus of every cell of his or her body, a human being has 46 chromosomes. 22 chromosome pairs (numbered from 1-22) belong to the autosomes and 1 pair to the sex chromosomes or gonosomes. They are denoted as X and Y. A female has two X-chromosomes and a male an X and a Y-chromosome. In a woman, one of the two X-chromosomes is inactivated in the form of heterochromatin (sex chromatin), the Barr body - diagnosis of the genetic gender is made on this basis.