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- Title
COMPARATIVE ANALYSIS OF THE HAEMOGLOBIN SYSTEM IN THE ROMANIAN SHEEP BREEDS.
- Authors
Hrincă, G.; Vicovan, P. G.
- Abstract
The biochemical polymorphism of haemoglobin was studied in five breeds and three zootechnical lines of sheep which are reared in Romania. Three haemoglobin types (haemoglobins A, B and AB) were distinguished in the electrophoretic field. These three phenotypes are controlled by a pair of co-dominant alleles, HbA and HbB. The haemoglobin polymorphism has a middle level defined by expression of three genotypes: two homozygous (HbAHbA and HbBHbB), and one heterozygous (HbAHbB). Haemoglobin allelic and genotypic frequencies vary widely and differ very much both among breeds but especially within the breeds. The allele HbB is much more frequent than the allele HbA. The commonest genotype is the homozygous one for the allele HbB and the homozygotes for the allele HbA are less spread; the heterozygous individuals for both alleles have a middling incidence. There are discussed the genetic, technological and selection factors which determine the haemoglobin polymorphism and their influence on the polymorphism degree of this biochemical system in sheep. No significant deviation from the genetic Hardy-Weinberg equilibrium was observed in the studied sheep populations.
- Subjects
ROMANIA; COMPARATIVE studies; HEMOGLOBIN polymorphisms; POLYMORPHISM (Zoology); SHEEP
- Publication
Annals of the Romanian Society for Cell Biology, 2010, Vol 15, Issue 2, p32
- ISSN
2067-3019
- Publication type
Article