TAIWANESE HAKKA:
Origin--MODERN BIOLOGICAL STUDIES

All pronounciation of Honsii (Han characters) will be pronounced according to Hakka Taiwanese using Taiwanese Language PhoneticAlphabets (TLPA) except for those well established words such as Taiwan, Kwangtung etc. When a reference is cited, however, the author's original format is used. Mandarin may be included in the parenthesis using Wade system.

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Content

GENERAL INFORMATION ABOUT HAKKA 2. ORIGIN OF HAKKA 2.3 MODERN BIOLOGICAL STUDIES: 2.31 Immunoglobulin Studies 2.32 Human Leukocyte Antigen Studies 2.33 G6PD Deficiency Studies 2.34 Multiple Genes Analysis 2.35 Other Biological Studies 2.36 Hakka Taiwanese and Taiwanese Aborigine CULTURE AND LANGUAGE OF HAKKA IN TAIWAN HISTORY OF HAKKA IN TAIWAN

1) Immunoglobulin Studies:

Human immunoglobulins have structural differences. These differences can be used as genetic markers for population genetics. One of these markers Gm is in immunoglobulin G H (heavy) chain. These genetic markers are inherited in fixed combinations termed Gm haplotypes. It has been recognized that the Gm haplotypes common to Mongoloid populations are Gm ag, axg, ab3st and afb1b3. Prof. Hideo Matsumoto of Osaka Medical College collected blood from different areas and analyzed the difference of Gm markers. He divided the Mongoloid populations into two groups. One is northern group which is characterized by high frequency of Gm ag and Gm ab3st and extremely low frequency of Gm afb1b3 haplotype, and the other one southern group characterized by a remarkably high frequency of Gm afb1b3 and a low frequency of Gm ag and Gm ab3st. Dr. Matsumoto speculated that the origin of the Gm afb1b3 characteristic of southern Mongoloids exists in Yunnan and Guangxi areas of southwest China. The origin of the Gm ab3st characteristic of northern Mongoloids exists in Siberia, most likely in the Baikal area. ( "Characteristics of Mongoloid Populations and Immunogenetics of Various Diseases Based on the Genetic Markers of Human Immunoglobulins" by H Matsumoto in "Expl Clin Immunogenet 1989; 6:68-87"). No specific study on Hakka by Dr. Matsumoto was found. However, he had one paper on Taiwanese ("Gm and Km allotypes of the Taiwanese" by H Matsumoto et al in "Jap J Human Genet 1975; 20:169-173"). From the study in Taichung area, an area with about 5% Hakka and 95% Hoklo, they classified Taiwanese as southern Mongoloid group characterized by a high frequency of Gm afb1b3. They did not make comment about the difference between Hakka and Hoklo. (In their paper, however, they did mention Minnan and Hakka groups in Taiwan). Similar study done by a group of Chinese scholars, however, did a study in an area with primarily Hakka population. This paper ("Study on Immunoglobulin Allotypes in the Chinese: a Hypothesis of the Origin of the Chinese Nation" by T Zhao et al in "Acta Genetica Sinica 1991; 18:97-108"). Their study also suggested that Chinese originated from two distinct populations, southern and northern. Hakka from Meixian clearly belongs to southern Mongoloid group. Phylogenetic tree of 74 populations was constructed using unweighted pair-group clustering method by T Zhao et al. The closest "relatives" of Hakka are the people from Guangzhou, She (Ú®) people and the people from Liuzhou of Guangxi. Hakka also have close "relatives" from other southern aboriginal groups such as Mulao, Zhuang, Dong, Jing, Miao, Bouyei, and Shui. From the above data, at least biologically, Hakka is primarily originated from southern Mongoloid groups rather than from northern or central China (Chung-yuan, He-nan) as many believe.

2)Human Leukocyte Antigen (HLA):

Dr. Chen, Kuang-ho (³¯ ¥ú ©M ¡^ in Taipei recently published an article “ Genetic Finding and Mongoloid Population Migration in China ” in Bulletin of the Institute of Ethnology, Academia Sinica No. 73, 209- 232, 1992. He used data from three following articles: 1) Sun Y et al : A comparative Study of HLA Distribution among Some Nationalities in China: I. Gene Frequencies and Genetic distance. Journal of Chinese Microbiology and Immunology 4:205- 211,1984 2) Zhao, Tongmao et al: Genetic Distance Estimated on the Basis of HLA. Academia anthropologica Sinica #:165-170, 1984 3) Zhao, Tongmao : HLA Fenxing Yuanli He Yingyong , Shanghai, China, Shanghai Kexue Jishue. 1982 He used standardized isonomy to measure similarities between populations. He made a taxonomy tree of the average linkage analysis from 25 Mongoloid populations in China. This figure can be seen in : Taxonomy Tree of the Average Linkage Analysis of HLA in Chinese Populations (Click the left side on " HLA Genetic Findings on Chinese Populations") The summary of his findings: 1) Chinese populations can be divided into northern and southern groups. 2) The northern group is split into the Mongolian and Hanren (Han people) subgroups. However, there is no southern Hanren subgroup in southern group. Hanren and national minorities have mixed. 3) Hanren admixtures are less pronounced in north. On the other hand, the heterogeneity of southern Hanren is so mixed that there is no way to identify Southern Hanren. The genetic mixture of Southern Hanren with national minorities has advanced to the point that the genetic distance between a particular Southern Han population and a neighboring minority may be shorter that the genetic distance between two particular neighboring Han populations. In the discussion section, he made few very interesting points as follows: There is one generally accepted theory that Hanren moved along Huanghe (Yellow River) migrated eastward, then moved towards the south. However, northern Hanren have not mixed with any southern Han populations and vice versa. There are three possible explanation for this contradiction. A) The number of investigated Han may not statistically large enough, other wise, either the general understanding is wrong or the origin of Hanren is not unique. B) The unique migration route never existed. Nor is there any indication of the existence of other routes to south. C) There were at least two Han origins which were separated at Changjiang (Yangtze River). As a result of discussions with Dr. Du, Ruofu ( §ù ­Y ¨j ), the Division of Human Population Genetics of the Genetics of the Genetics Institute, Academic Sinica, Beijing. Two terms used by historians might be able to explain the findings, "jianbing" and "ronghe" (­Ý ¨Ö ¡A ¿Ä ©M ). Jianbing describes a situation where the name of a minority population is accepted by a new population which formed from an admixture of minority population with an aboriginal majority population and/or populations. The latter population would, in effect, lose its identity. The minority is generally the invader and the majority population the invaded. Ronghe is a situation where an invaded majority regains its identity after a long period of exchanging genes with its invaders. In most situations the consequence of mixing genes is the key factor which distinguishes ronghe from jianbing. Jianbing occurred in the south and ronghe most likely occurred in the north. Before the Han(º~ ) dynasty, the majority of invading populations were from the south. Two examples are the war between the Han emperor Huangdi (¶À «Ò) and leader of southern population Qiyu(°E ¤× ) and northern invasion by Chuguo( ·¡ °ê ) from south. Qin Shi-huang(¯³ ©l ¬Ó), the first northern emperor to unify China, not only brought all of the Han populations under his control but absorbed Chugo and south and later expanded Hanren territory to further south. The HLA data certainly agreed with the immunoglobulin data. Hakka and other southern populations (such as Wu, Ming, Yue and others) in China and Taiwan (Hoklo, aboriginal groups) are primarily southern origin rather than migrated from northern China. Recently, I found a brochure of "The Chicago Community Cord Blood Bank". If you want to donate the cord blood to the bank or to request a donor, there is a form of Parents' Ancestry for both mother and father. Under Asian/Pacific Islander, there were following categories to be checked. ( ) Asian Indian, ( ) Filipino, ( )Hawaiian/Polynesian, ( )Japanese, ( )Korean, ( )Northern Chinese, ( )Southeast Asian/Southern Chinese, ( )Oriental, not otherwise specified. To find the best suitable donor is based on HLA typing. In order to find a best donor quickly, which category would you like to check, if you are a Hakka. A firm believer that Hakka are the descendants of people from Tsung-Ngien (Chung-yuan, Central Plain) or Northern China would check the category of ( ) Northern Chinese?

3) Glucose-6-phosphate Dehydrogenase (G6PD)

Glucose-6-phosphate Dehydrogenase is an enzyme in the red blood cell. It help to maintain the stability of red blood cell. If the level of G6PD is low (deficiency) in the individual, the red blood cell is more like to hemolyse, especially under the stress with certain drugs or consumption of raw fava bean. The condition is still called “ favism ” ¡] Åú ¨§ ¯g ¡^ especially in case of fava bean ingestion. Hakka in Taiwan is well known to have high prevalence of G6PD deficiency among the different ethnic groups. Two most common abnormal G6PD were named as Taiwan-Hakka and Taipei-Hakka before. The G6PD gene is located in X-chromosome. Therefore, male have higher deficient rate because one affected X-chromosome gene is generally sufficient to cause deficiency (male has XY chromosome). However, female with XX chromosome is less likely to cause significant problems if they have one other normal gene in X chromosome. It is a hereditary disorder. The prevalence of G6PD deficiency varies greatly throughout the world. A world map of G6PD deficiency from WHO Working Group (Bull. WHO 1989: 67:601) also demonstrated that Taiwan and southern China have a high deficiency rate. In the area around the provinces of Kuangtung, Kuangsi, Yun-nan and the neighboing Southeast Asian countries all have high prevalence of the deficiency. The deficiency rate is listed as 3-6.9 % or higher in southern China. However, the deficiency rate of northern China is less than 0.5%. It is very interested to know, comments were made by some medical articles about the high deficiency rate of Hakka in Taiwan. They merely mentioned that it is interesting to note the discrepancy between the northern Chinese and Hakka. Two articles mentioned this because the Hakka claimed they migrated from northern China but have much higher rate. ( Tang, KT et al in Blood 1992, 79:2135 and Chen, WP et al in Chinese Medical Journal (Taipei) 1987; 40: 443). In the later article, in a northern general hospital (in Taipei, Taiwan) 12.9% of male newborn and 7.8% of male and female have G6PD deficiency if both parents are Hakka. In overall population (including Hakka), the rate of G6PD deficiency is 2.9% (male) and 1.9% (male and female) respectively. The later figure of 2.9% and 1.9% are low because this hospital is located at the area that many new residents came after 1949 and significant number of them are from northern China. In the past two decades, molecular analysis of abnormal G6PD became possible. Exact location of abnormal nucleotide in G6PD gene and abnormal amino acid in G6PD enzyme were found. Some abnormalities found in Hakka were found also in other ethnic groups not only in China but also in Southeast Asia. These hereditary abnormalities, however, are not found in northern Chinese. The vast majority of more than 100 molecularly identified G6PD mutants are single amino acid replacements caused by single missense nucleotide mutations. The molecularly known mutants will allow more accurate study of population movement. Taiwan, southern China, Southeast Asia, and southern Pacific islands were known to have a high prevalence of G6PD deficiency. The two most common mutants in Taiwan, 1376T and 1388A, or their biochemically equivalent mutants were commonly found in southern China, Thailand, Vietnam, Singapore, Laos, Malaysia, and Indonesia. The third most common 493G mutant in Taiwan has not been found in China or overseas Chinese but is a relatively common mutant in the Philippines. This mutant is the most common one among one aboriginal group, the Siasiat, in Taiwan. Two other relatively uncommon 1360T and 487A mutants in Taiwan have not been found in China. However, 1360T is the most common mutant in the Philippines and is also found in the Vanuatu islands in Melanesia. The 487A mutant is more common in other Southeast Asian countries. Another uncommon 592T mutant in Taiwan is the most common one in another aboriginal group,the Ami, and this mutant can also be found in China and Laos. F8C/G6PD polymorphism studies are available from certain areas. Han and aboriginal groups in Taiwan have a similar pattern suggesting they might have the same ancestors. The same F8C/G6PD haplotype was found in 1376T mutants in the Taiwanese and the Li minority in Hainan, China. The G6PD mutant and F8C/G6PD polymorphism studies suggest that the Han and minorities of southern China, southeastern Asians, Han and aboriginal groups in Taiwan probably originate from the same ancestors somewhere in Southeast Asia or southern China. The current Han population in Taiwan and southern China are unlikely the descendants of massive migration of northern Chinese. Again, the G6PD data is consistent with those of immunoglobulin, and HLA. From G6PD data, the origin of Hakka is again primarily from Southern Mongoloid rather than Northern Mongoloid, Tsung-Ngien (Chung- yuan) or Northern Chinese. (If you have big-5 Honsii fonts, there is an article on "G6PD mutation and Ethnic Relationship in Taiwan published in Taiwan Medical Journal 42:252-256,1999, it is available on Internet. There is another article on G6PD deficiency in Hakka Taiwanese Newsletter #18, the address is: Hakka Taiwanese Newsletter #18)

4). Multiple Genes Analysis

L.L Cavalli-Sforza, P. Menozzi and A. Piazza published a book " The History and Geography of Human Genes" in 1994 by Princeton University Press, Princeton, New Jersey. It is a remarkable book about the genetics of human population. The book is more than thousand pages thick and has more than 500 genetic map based on different genes. They use scientific methods to analyze many genes in many populations of the world. Base on the data they collected, they calculate the genetic distance among different populations and have proposed various "genetic trees". In the chapter (chapter 4) of Asia, based on 68.6 genes on average, a tree was constructed from 39 populations. These genes include all above mentioned immunoglobulin, HLA, and G6PD genes. Again North China and South China belong to different major clusters. They made a comment that , despite millennia of common history and many migrations, a profound initial genetic difference between these two regions has been in part maintained. South Chinese join Southeast Asians while the North Chinese associate with Koreans, Japanese, Ainu, Bhutanese and Tibetans. Other Southeast Asians includes Malaysian, Balinese, Viet Muong, Thai, Indonesian and Philippine. This genetic tree also showed the Northern Chinese is closer to Caucasoid than to Southern Chinese. The authors comment that unlike the data from physical anthropology, the tree showed a major distinction between Southeast Asia and the rest of Asia. The association between East and Northeast Asians and the all Asian Caucasoids (such as Arabian, Iranian, Asian Indian) are clear from these gene studies. In the section of East and Central Asia (sections 4.12 ) and Southeast Asia (section 4.13), there are more detail discussion and other methods of analysis. Regardless what kind of methods they used, all the genetic trees and maps demonstrate that Southern Chinese is distant from Northern Chinese. In the part discuss China, it mentioned that at least 52 minorities or isolated ethnic groups in China. Almost half of these ethnic groups live in the Yun-nan provinces and these ethnic groups may be the enclaves of original inhabitants. It said by far the majority of modern Chinese, however, call themselves Han, the dominant group. A tree of Han based on blood type ABO, RH, MN by Du et al (Chinese Surnames and the Genetic Differences between North and South) clearly demonstrated a separation of north and south. Base on the Han surnames from the 1982 census in the same paper, Du et al find their frequency distribution originates a tree that is in substantial agreement with the genetic one, in spite of transmission of surnames limited only by the male line. No specific data of Hakka was shown or discussed in the book. Hakka is only mentioned once when the waves of migration to Taiwan are discussed. All these biological gene studies, Hakka in Taiwan or China are primarily not the descendants of Northern Mongoloids but primarily descendants of original southerners.

5) Other Biological Studies:

Similarly, there are also other biological data, especially thalassemia genes and mitochondria DNA, might be very helpful to trace the origin of Hakka. Will try to obtain these data and to update them here later.

6) Hakka Taiwanese and Taiwanese Aborigine

The contribution of Taiwanese aboriginal groups to Hakka Taiwanese should be a very important component in discussing the origin of Hakka in Taiwan. From the above 3)Glucose-6-phosphate Dehydrogenase (G6PD) study, partial ancestry of the current Han population in Taiwan might come from aboriginal groups. Some aboriginal groups of Taiwan might have originally migrated from the Philippines, or Taiwan is the ancestral origin for Taiwanese aboriginal groups, Filipinos and other southern Pacific Islanders as some recent studies suggest. We are collecting more other data and will update later. Culture and Language of Hakka HAKKA IN TAIWAN {to be continued} update on 11/20/98 Albert Chu Link to: HAKKA TAIWANESE SPECCIAL PUBLICATION «È ¥x »y ±M ¥Z ¦U ´Á Link to:TAIWANESE HAKKA ¥x ÆW «È ®a (ENGLISH) Link to:HAKKA TAIWANESE RESOURCES «È ¥x »y ¸ê ®Æ ®w Link to:HAKKA TAIWANESE HAKKA CULURE ¥x ÆW «È ®a ¤å ¤Æ ±M ¥Z Link to:TAIWANESE MEDICAL HISTORY ¥x ÆW Âå ¾Ç ¥v ±M ¥Z Link to: TAIWAN RELATED ARTICLES ¥x ÆW ±M ¥Z