History of the Jews in TunisiaThe history of the Jews in Tunisia extended nearly two thousand years and goes back to the Punic era. The Jewish community in Tunisia is no doubt older and grew up following successive waves of immigration and proselytism before its development was hampered by anti-Jewish measures in the Byzantine Empire. The community formerly used its own dialect of Arabic. After the Muslim conquest of Tunisia, Tunisian Judaism went through periods of relative freedom or even cultural apogee to times of more marked discrimination.
Genetic divergenceGenetic divergence is the process in which two or more populations of an ancestral species accumulate independent genetic changes (mutations) through time, often leading to reproductive isolation and continued mutation even after the populations have become reproductively isolated for some period of time, as there isn’t genetic exchange anymore. In some cases, subpopulations cover living in ecologically distinct peripheral environments can exhibit genetic divergence from the remainder of a population, especially where the range of a population is very large (see parapatric speciation).
Congenital red–green color blindnessCongenital red–green color blindness is an inherited condition that is the root cause of the majority of cases of color blindness. It has no significant symptoms aside from its minor to moderate effect on color vision. It is caused by variation in the functionality of the red and/or green opsin proteins, which are the photosensitive pigment in the cone cells of the retina, which mediate color vision. Males are more likely to inherit red–green color blindness than females, because the genes for the relevant opsins are on the X chromosome.
Racial segregationRacial segregation is the separation of people into racial or other ethnic groups in daily life. Racial segregation can amount to the international crime of apartheid and a crime against humanity under the 2002 Rome Declaration of Statute of the International Criminal Court. Segregation can involve the spatial separation of the races, and mandatory use of different institutions, such as schools and hospitals by people of different races.
Extraocular musclesThe extraocular muscles, or extrinsic ocular muscles, are the seven extrinsic muscles of the human eye. Six of the extraocular muscles, the four recti muscles, and the superior and inferior oblique muscles, control movement of the eye and the other muscle, the levator palpebrae superioris, controls eyelid elevation. The actions of the six muscles responsible for eye movement depend on the position of the eye at the time of muscle contraction. Since only a small part of the eye called the fovea provides sharp vision, the eye must move to follow a target.
TrichromacyTrichromacy or trichromatism is the possessing of three independent channels for conveying color information, derived from the three different types of cone cells in the eye. Organisms with trichromacy are called trichromats. The normal explanation of trichromacy is that the organism's retina contains three types of color receptors (called cone cells in vertebrates) with different absorption spectra. In actuality the number of such receptor types may be greater than three, since different types may be active at different light intensities.
SomalisThe Somalis (Soomaalida 𐒈𐒝𐒑𐒛𐒐𐒘𐒆𐒖, صوماليون) are an ethnic group native to the Horn of Africa who share a common ancestry, culture and history. The East Cushitic Somali language is the shared mother tongue of ethnic Somalis, which is part of the Cushitic branch of the Afroasiatic language family, and are predominantly Sunni Muslim. They form one of the largest ethnic groups on the African continent, and cover one of the most expansive landmasses by a single ethnic group in Africa.
ArabsThe Arabs (عَرَب, DIN 31635: DIN, Arabic pronunciation: ˈʕa.rab), also known as Arab people (الشَّعْبَ الْعَرَبِيُّ), are an ethnic group mainly inhabiting the Arab world in West Asia and North Africa, which formally denotes the "Arab homeland". Moreover, a significant Arab diaspora is present in various parts of the world. According to the Abrahamic tradition, Arabs are descendants of Abraham through his son Ishmael. Islamic sources further propose that Abraham brought Hagar and Ishmael to Mecca.
