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Human chromosomal polymorphism. V. Chromosomal Q polymorphism in African populations

Human Genetics volume 62, pages 261–265 (1982)Cite this article

Summary

The distribution pattern of Q-heterochromatin variants in seven autosomes (3, 4, 13–15, 21, and 22) was studied in three aboriginal Negroid populations of Africa (Mozambique, Angola, and Ethiopia). It was shown that among African Negroids there are no individuals completely lacking Q-heterochromatin bands with fluorescence levels 4 and 5. The mean number of Q variants per individual was 3.47, 4.80, and 4.85 in the Ethiopian, Mozambique, and Angola populations, respectively. The observed homo- and heteromorphic frequencies always agreed with those predicted by the law of Hardy-Weinberg. The populations of tropical lowland Negroids (Mozambique and Angola) proved to be significantly homogeneous both in the frequency of Q variants and the mean number of these variants per individual, so they were examined as a single group. However, comparative analysis of highland (Ethiopians) and lowland Negroids revealed statistically significant differences. The following questions are discussed: (1) the possible selective value of chromosomal Q heterochromatin material in the adaptation of human populations to high-altitude climate; (2) the possible existence of intraracial heterogeneity in Negroids living in different ecological zones of Africa; (3) the possible taxonomic value of an inverted Q-heterochromatin band in chromosome 3 in ethnic anthropology.

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References

  • Hess RL (1970) Ethiopia. Cornell University Press, Ithaca New York

    Google Scholar 

  • Ibraimov AI, Mirrakhimov MM (to be published) Human chromosomal polymorphism. III. Chromosomal Q polymophism in Mongoloids of Northern Asia. Hum Genet

  • Ibraimov AI, Mirrakhimov MM (to be published) Human chromosomal polymorphism. IV. Q polymorphism in Russians living in Kirghizia. Hum Genet

  • Ibraimov AI, Mirrakhimov MM, Nazarenko SA, Axenrod EI, Akbanova GA (1982a) Human chromosomal polymorphism. I. Chromosomal Q-polymorphism in Mongoloid populations of Central Asia. Hum Genet 60:1–7

    Google Scholar 

  • Ibraimov AI, Mirrakhimov MM, Nazarenko SA, Axenrod EI (1982b) Human chromosomal polymorphism. II. Chromosomal C polymorphism in Mongoloid populations of Central Asia. Hum Genet 60:8–9

    Google Scholar 

  • Lubs HA, Kimberling WJ, Hecht F, Patil SR, Brown J, Gerald P, Summit RL (1977) Racial differences in the frequency of Q and C chromosomal heteromorphisms. Nature 268:631–633

    Google Scholar 

  • Paris Conference (1971), Supplement (1975) Standardization in human cytogenetics. Birth Defects XI:

  • Pawson IG, Jest C (1978) High-altitude regions of the world and their culture. In: Baker PT (ed) The biology of high-altitude peoples. International Biological Programme XIV. Cambridge University Press, Cambridge London New York Melbourne, pp 29–58

    Google Scholar 

  • Selassie SH (1972) Ancient and medieval Ethiopian history to 1270. United Printers, Addis Ababa

    Google Scholar 

  • Soudek D, Sroka H (1978) Inversion of “fluorescent” segment in chromosome 3: a polymorphic trait. Hum Genet 44:109–115

    Google Scholar 

  • Verma RS, Dosik H (1981a) Human chromosomal heteromorphism in American Blacks. III. Evidence for racial differences in RFA color and QFQ intensity heteromorphism. Hum Genet 56:329–337

    Google Scholar 

  • Verma RS, Dosik H (1981b) Human chromosomal heteromorphism in American Blacks. IV. Intensity variation in centromeric regions of chromosomes 3 and 4. Can J Genet Cytol 23:315–320

    Google Scholar 

Download references

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Authors and Affiliations

  1. Human Genetics Laboratory, Kirghiz Institute of Cardiology, Togolok Moldo St. 3, 720040, Frunze, USSR

    A. I. Ibraimov & M. M. Mirrakhimov

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  1. A. I. Ibraimov
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  2. M. M. Mirrakhimov
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Ibraimov, A.I., Mirrakhimov, M.M. Human chromosomal polymorphism. V. Chromosomal Q polymorphism in African populations. Hum Genet 62, 261–265 (1982). https://doi.org/10.1007/BF00333533

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  • DOI: https://doi.org/10.1007/BF00333533

Keywords

  • Internal Medicine
  • Comparative Analysis
  • Distribution Pattern
  • Metabolic Disease
  • Human Population