𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Morphologic variability of human chromosomes: Polymorphism of constitutive heterochromatin

✍ Scribed by P. K. Ghosh; Indera P. Singh


Publisher
Springer
Year
1976
Tongue
English
Weight
484 KB
Volume
32
Category
Article
ISSN
0340-6717

No coin nor oath required. For personal study only.

✦ Synopsis


Polymorphism of constitutive heterochromatin has been studied in a series of 30 normal individuals. A high frequency of C-band variants were observed. Twenty-six of the 30 individuals studied had at least one polymorphic variant of the C band. A total of 42 variants were recorded which were predominately localized near the centromeric heterochromatin block of chromosome 9 (26.19%), chromosome 16 (19.05%), and chromosome 1 (16.66%). These results are discussed together with the findings revealed by different studies.


πŸ“œ SIMILAR VOLUMES


Lateral asymmetry of constitutive hetero
✍ P. K. Ghosh; Rajni Rani; Reita Nand πŸ“‚ Article πŸ“… 1979 πŸ› Springer 🌐 English βš– 301 KB

Variations in lateral asymmetry of constitutive heterochromatin were studied in 30 normal individuals with reference to the chromosomal regions 1q12, 9q12, 15p11, 16q12 and Yq12. The technique consisted of growing human lymphocytes for one cell cycle in BrdU, staining with 33258 Hoechst, exposing th

Complete deficiency of constitutive hete
✍ C. H. C. M. Buys; J. M. M. Ypma; W. L. Gouw πŸ“‚ Article πŸ“… 1979 πŸ› Springer 🌐 English βš– 227 KB

In cultured amniotic fluid cells a mediocentric chromosome 9 appeared to be completely deficient in constitutive heterochromatin when stained with distamycin A and DAPI. In addition, this deficient chromosome was found in a blood cell culture from the father. Both the father and the child after birt

Length of human constitutive heterochrom
✍ Petr Balíček; Jan Ε½iΕΎka; Hana SkalskΓ‘ πŸ“‚ Article πŸ“… 1977 πŸ› Springer 🌐 English βš– 520 KB

Linear measurement of blocks of constitutive heterochromatin and the euchromatin portion 1q-h in three members of a family was used to study the dependence of the size of C blocks on the degree of chromosomal contraction. The results demonstrate that the size of heterochromatin portions decrease reg