Shapur II the Great (309–379 A.D.) of the
Sasanian Empire, after a
punitive expedition across the Persian Gulf early in his reign, transplanted several clans of the
Taghleb to Dārzīn (Daharzīn) near
Bam, several clans of the
Abd al-Qays and
Tamīm to Haǰar (the Kūh-e Hazār region) southeast of
Kermān, several clans of the
Bakr ben Wāʾel to Kermān, and several clans of the
Hanzala to
Tavvaz, near present-day
Dālakī in
Fārs. Although after the
Arab conquest of the Sasanian Persian empire in the 7th century, many Arab tribes settled in different parts of Iran, it is the Arab tribes of
Khuzestan that have retained their identity in language, culture, and Shia Islam to the present day. But ethno-linguistic characteristics of the region must be studied against the long and turbulent history of the province, with its own local language
Khuzi, which may have been of
Elamite origin and which gradually disappeared in the early medieval period. The immigration of Arab tribes from outside the province was also a long-term process. There was a great influx of Arab-speaking immigrants into the province from the 16th to the 19th century, including the migration of the
Banu Kaab and
Banu Lam. There were attempts by the Iraqi
Hussein regime during the
Iran–Iraq War (1980–88) to generate
Arab nationalism in the area, but without any palpable success.
Genetics According to various genetic studies, Iranian Arabs are genetically similar to other Iranian citizens and their genetic affinity "might be the result of their common ancestry". Hajjej et al. found that Khuzestani Arabs have close relatedness with
Gabesians.
Haplogroup J1-M267 reaches 33.4% in samples from Khuzestan, slightly higher than in other parts of Iran. It also reaches a frequency of 31.6% in Khuzestani Arabs. Sampling
NRY diversity, it was determined that the
Y-DNA haplogroups F and
J2 such as haplogroup J1 are carried at high frequency among the Iranian Arabs, accounting for more than half of Iranian Arab haplogroups. The high ratio of
haplogroup F genetically relates Iranian Arabs to
Eastern Mediterraneans and the people of the
Barbary Coast. An elevated frequency of haplogroup J-M172 is typical of
Near Eastern people and reflective of the genetic legacy of early agriculturalists in the Neolithic Near East
c. 8000–4000 BCE.
Haplogroup R1a1, and
R1, typical of
Indo-Iranian groups, occurred in more than 11 percent of the sample and
haplogroup G was present in more than 5 percent. ==Regional groups==