Riad Bayoumi
Biographic Data
| ID | 4787266 |
|---|---|
| NAME | Riad Bayoumi |
| GIVEN NAMES | Riad |
| FAMILY NAME | Bayoumi |
| SIGNATURE | BAYOUMI R |
| AFFILIATIONS | University of Khartoum |
| ORCID | 0000-0001-8177-8129 |
| VERIFIED | Yes |
| TOTAL WORKS | 9 |
| TOTAL CITATIONS | 35 |
| AUTHOR COUNT | 9 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1980 |
| LATEST PUBLICATION YEAR | 2016 |
| H-INDEX | 4 |
Positive selection of lactase persistence among people of Southern Arabia
OBJECTIVE: Frequency patterns of the lactase persistence (LP)-associated -13,915 G allele and archaeological records pointing to substantial role played by southern regions in the peopling and domestication processes that involved the Arabian Peninsula suggest that Southern Arabia plausibly represented the center of diffusion of such adaptive variant. Nevertheless, a well-defined scenario for evolution of Arabian LP is still to be elucidated and …
Tabula rasa or refugia? Using genetic data to assess the peopling of Arabia
This paper provides a broad overview of the current state of archaeogenetic research in Arabia. We summarise recent studies of mitochondrial DNA and lactase persistence allele ‐13915*G in order to reconstruct the population histories of modern Arabs. These data, in turn, enable us to assess different scenarios for the peopling of the Peninsula over the course of the Late Pleistocene and Early Holocene. The evidence supports the posited existence …
Pleistocene‐Holocene boundary in Southern Arabia from the perspective of human mtDNA variation
It is now known that several population movements have taken place at different times throughout southern Arabian prehistory. One of the principal questions under debate is if the Early Holocene peopling of southern Arabia was mainly due to input from the Levant during the Pre‐Pottery Neolithic B, to the expansion of an autochthonous population, or some combination of these demographic processes. Since previous genetic studies have not been able …
Distribution of the Lactase Persistence-Associated Variant Alleles -13910*T and -13915*G among the People of Oman and Yemen
The high prevalence of lactase persistence (LP) among the people of Saudi Arabia is associated with the -13915*G variant allele upstream of the lactase gene (LCT). We, therefore, examined the frequency of the commonly known LP associated SNPs among randomly collected samples from Omani and Yemeni adult populations and obtained further data on the distribution of the two most common LP-associated variants, -13910*T and -13915T*G, in the Arabian Pe…
Distribution of the Lactase Persistence-Associated Variant Alleles -13910 * T and -13915 * G among the People of Oman and Yemen
The high prevalence of lactase persistence (LP) among the people of Saudi Arabia is associated with the -13915(*)G variant allele upstream of the lactase gene (LCT). We, therefore, examined the frequency of the commonly known LP associated SNPs among randomly collected samples from Omani and Yemeni adult populations and obtained further data on the distribution of the two most common LP-associated variants, -13910(*)T and -13915T(*)G, in the Arab…
Some blood genetic markers of the Nuba and Hawazma tribes of Western Sudan
Two hundred eighty subjects comprising 112 Nuba and 168 Hawazma of the Sudan were tested for the distribution of hemoglobins, eight red cell enzymes, and four serum proteins. The Nuba, the indigenous negroid tribe, had no Hb S , Hb O‐Arab , or Gd B(Khartoum) compared to the Hawazme tribe of Negro‐Arab descent. The gene frequencies of the above polymorphic systems in the latter were as follows: Hb S , 0.13; Hb O‐Arab , 0.01; Gd B(Khartoum) , 0.03.…
A study of some genetic characteristics of the Fur and Baggara tribes of the Sudan
The average inbreeding coefficients of the highly consanguineous Fur and Baggara tribes of Western Sudan were 0.04167 and 0.04450, respectively. Two hundred ninety‐eight subjects from the two tribes were tested for polymorphism of hemoglobins, seven red cell enzymes, and four serum proteins. The Baggara showed a higher gene frequency of Hb S and Tf D and lower gene frequency of Gd A and P C compared to the Fur. Both tribes showed a log gene frequ…
Beja And Nilotes: Nomadic pastoralist groups in the Sudan with opposite distributions of the adult lactase phenotypes
Lactose tolerance tests with breath hydrogen determination were performed on 585 apparently healthy adolescents and adults in the Democratic Republic of the Sudan. Out of the total, 303 probands belong to the tribal group Beja, traditional nomadic pastoralists in the desert zone between the Nile and the Red Sea. The 282 Nilotes (mainly Dinka) are members of seminomadic cattle breeding tribes in the south of the Sudan. In both populations milk con…
Some blood genetic markers of selected tribes in Western Saudi Arabia
A total of 292 randomly selected subjects belonging to two indigenous Arab tribes (Harbi and Ghamid) and two immigrant tribes (Mograbi and Mowallad), residents in Western Saudi Arabia, have been tested for genetic variants of six blood groups, four serum proteins, and five red cell enzyme systems. The distribution of the polymorphic systems was different between indigenous and immigrant tribes, and the present Arab population shows a considerable…
Beja And Nilotes: Nomadic pastoralist groups in the Sudan with opposite distributions of the adult lactase phenotypes
Lactose tolerance tests with breath hydrogen determination were performed on 585 apparently healthy adolescents and adults in the Democratic Republic of the Sudan. Out of the total, 303 probands belong to the tribal group Beja, traditional nomadic pastoralists in the desert zone between the Nile and the Red Sea. The 282 Nilotes (mainly Dinka) are members of seminomadic cattle breeding tribes in the south of the Sudan. In both populations milk con…
Pleistocene‐Holocene boundary in Southern Arabia from the perspective of human mtDNA variation
It is now known that several population movements have taken place at different times throughout southern Arabian prehistory. One of the principal questions under debate is if the Early Holocene peopling of southern Arabia was mainly due to input from the Levant during the Pre‐Pottery Neolithic B, to the expansion of an autochthonous population, or some combination of these demographic processes. Since previous genetic studies have not been able …
Distribution of the Lactase Persistence-Associated Variant Alleles -13910 * T and -13915 * G among the People of Oman and Yemen
The high prevalence of lactase persistence (LP) among the people of Saudi Arabia is associated with the -13915(*)G variant allele upstream of the lactase gene (LCT). We, therefore, examined the frequency of the commonly known LP associated SNPs among randomly collected samples from Omani and Yemeni adult populations and obtained further data on the distribution of the two most common LP-associated variants, -13910(*)T and -13915T(*)G, in the Arab…
A study of some genetic characteristics of the Fur and Baggara tribes of the Sudan
The average inbreeding coefficients of the highly consanguineous Fur and Baggara tribes of Western Sudan were 0.04167 and 0.04450, respectively. Two hundred ninety‐eight subjects from the two tribes were tested for polymorphism of hemoglobins, seven red cell enzymes, and four serum proteins. The Baggara showed a higher gene frequency of Hb S and Tf D and lower gene frequency of Gd A and P C compared to the Fur. Both tribes showed a log gene frequ…
Some blood genetic markers of selected tribes in Western Saudi Arabia
A total of 292 randomly selected subjects belonging to two indigenous Arab tribes (Harbi and Ghamid) and two immigrant tribes (Mograbi and Mowallad), residents in Western Saudi Arabia, have been tested for genetic variants of six blood groups, four serum proteins, and five red cell enzyme systems. The distribution of the polymorphic systems was different between indigenous and immigrant tribes, and the present Arab population shows a considerable…
Some blood genetic markers of the Nuba and Hawazma tribes of Western Sudan
Two hundred eighty subjects comprising 112 Nuba and 168 Hawazma of the Sudan were tested for the distribution of hemoglobins, eight red cell enzymes, and four serum proteins. The Nuba, the indigenous negroid tribe, had no Hb S , Hb O‐Arab , or Gd B(Khartoum) compared to the Hawazme tribe of Negro‐Arab descent. The gene frequencies of the above polymorphic systems in the latter were as follows: Hb S , 0.13; Hb O‐Arab , 0.01; Gd B(Khartoum) , 0.03.…
Tabula rasa or refugia? Using genetic data to assess the peopling of Arabia
This paper provides a broad overview of the current state of archaeogenetic research in Arabia. We summarise recent studies of mitochondrial DNA and lactase persistence allele ‐13915*G in order to reconstruct the population histories of modern Arabs. These data, in turn, enable us to assess different scenarios for the peopling of the Peninsula over the course of the Late Pleistocene and Early Holocene. The evidence supports the posited existence …
Some blood genetic markers of selected tribes in Western Saudi Arabia
A total of 292 randomly selected subjects belonging to two indigenous Arab tribes (Harbi and Ghamid) and two immigrant tribes (Mograbi and Mowallad), residents in Western Saudi Arabia, have been tested for genetic variants of six blood groups, four serum proteins, and five red cell enzyme systems. The distribution of the polymorphic systems was different between indigenous and immigrant tribes, and the present Arab population shows a considerable…
Beja And Nilotes: Nomadic pastoralist groups in the Sudan with opposite distributions of the adult lactase phenotypes
Lactose tolerance tests with breath hydrogen determination were performed on 585 apparently healthy adolescents and adults in the Democratic Republic of the Sudan. Out of the total, 303 probands belong to the tribal group Beja, traditional nomadic pastoralists in the desert zone between the Nile and the Red Sea. The 282 Nilotes (mainly Dinka) are members of seminomadic cattle breeding tribes in the south of the Sudan. In both populations milk con…
A study of some genetic characteristics of the Fur and Baggara tribes of the Sudan
The average inbreeding coefficients of the highly consanguineous Fur and Baggara tribes of Western Sudan were 0.04167 and 0.04450, respectively. Two hundred ninety‐eight subjects from the two tribes were tested for polymorphism of hemoglobins, seven red cell enzymes, and four serum proteins. The Baggara showed a higher gene frequency of Hb S and Tf D and lower gene frequency of Gd A and P C compared to the Fur. Both tribes showed a log gene frequ…
Some blood genetic markers of the Nuba and Hawazma tribes of Western Sudan
Two hundred eighty subjects comprising 112 Nuba and 168 Hawazma of the Sudan were tested for the distribution of hemoglobins, eight red cell enzymes, and four serum proteins. The Nuba, the indigenous negroid tribe, had no Hb S , Hb O‐Arab , or Gd B(Khartoum) compared to the Hawazme tribe of Negro‐Arab descent. The gene frequencies of the above polymorphic systems in the latter were as follows: Hb S , 0.13; Hb O‐Arab , 0.01; Gd B(Khartoum) , 0.03.…
Pleistocene‐Holocene boundary in Southern Arabia from the perspective of human mtDNA variation
It is now known that several population movements have taken place at different times throughout southern Arabian prehistory. One of the principal questions under debate is if the Early Holocene peopling of southern Arabia was mainly due to input from the Levant during the Pre‐Pottery Neolithic B, to the expansion of an autochthonous population, or some combination of these demographic processes. Since previous genetic studies have not been able …
Distribution of the Lactase Persistence-Associated Variant Alleles -13910*T and -13915*G among the People of Oman and Yemen
The high prevalence of lactase persistence (LP) among the people of Saudi Arabia is associated with the -13915*G variant allele upstream of the lactase gene (LCT). We, therefore, examined the frequency of the commonly known LP associated SNPs among randomly collected samples from Omani and Yemeni adult populations and obtained further data on the distribution of the two most common LP-associated variants, -13910*T and -13915T*G, in the Arabian Pe…
Distribution of the Lactase Persistence-Associated Variant Alleles -13910 * T and -13915 * G among the People of Oman and Yemen
The high prevalence of lactase persistence (LP) among the people of Saudi Arabia is associated with the -13915(*)G variant allele upstream of the lactase gene (LCT). We, therefore, examined the frequency of the commonly known LP associated SNPs among randomly collected samples from Omani and Yemeni adult populations and obtained further data on the distribution of the two most common LP-associated variants, -13910(*)T and -13915T(*)G, in the Arab…
Tabula rasa or refugia? Using genetic data to assess the peopling of Arabia
This paper provides a broad overview of the current state of archaeogenetic research in Arabia. We summarise recent studies of mitochondrial DNA and lactase persistence allele ‐13915*G in order to reconstruct the population histories of modern Arabs. These data, in turn, enable us to assess different scenarios for the peopling of the Peninsula over the course of the Late Pleistocene and Early Holocene. The evidence supports the posited existence …
Positive selection of lactase persistence among people of Southern Arabia
OBJECTIVE: Frequency patterns of the lactase persistence (LP)-associated -13,915 G allele and archaeological records pointing to substantial role played by southern regions in the peopling and domestication processes that involved the Arabian Peninsula suggest that Southern Arabia plausibly represented the center of diffusion of such adaptive variant. Nevertheless, a well-defined scenario for evolution of Arabian LP is still to be elucidated and …
Biology (9 works) · Demography (8 works) · Ecology (7 works) · Ecology (6 works) · Geography (6 works) · Population (6 works) · Genetics (5 works) · Genetics (5 works) · Allele (4 works) · Allele frequency (4 works)