One of the most interesting genetic candidates for the abrupt onset of language and for human hemispheric asymmetry is the Protocadherin 11X/Y gene, the relevance of which is suggested by its role in axonal guidance during brain development and its evolutionary history across species [59].
Human body asymmetry must be considered as a possible variable for groin and axilla sites.
The typical development of human cerebral asymmetry has profound effect on the normal lateralization of cognitive and motor functions, such as language and handedness.
The well-known functional human hemispheric asymmetry observed for speech and music processing may not be limited to conscious high-level cognitive processes, but may be at least partially related to the pre-attentive processing of low-level acoustic features.
McGlone [ 1980] in her account of sex differences in human brain asymmetry quotes Crichton-Browne [ 1879]: "It would appear that the tendency to symmetry in the two halves of the cerebrum is stronger in women than in men".
Asymmetries in the fronto-parietal operculum and superior temporal sulcus are the most consistent and pronounced human cerebral asymmetries (Toga and Thompson, 2003; van Essen, 2005), which emerge from the 23rd gestational week (Habas et al., 2012).
His research on the human body's asymmetry sparked papers on topics from social dominance to aging.
Based on the previous reports on the relationships of human corticospinal tract asymmetries and handedness [40], [43], we hypothesized that, as reported in humans, chimpanzees' corticospinal tract asymmetries should be independent of handedness.
And as observed previously in human, the "global" asymmetries extend into the intergenic regions downstream to genes [ 17].
Examples in humans include the asymmetry of the planum temporal, branching of the bronchi, and the distribution of certain internal organs.
