Polar overdominance – a putative molecular
mechanism and the new examples in mammals

Polar overdominance is closely related to parental imprinting - a phenomenon where only one (maternal or paternal) allele is expressed in the offspring. In contrast to gametic imprinting, polar overdominance is not very well known and only few examples of this phenomenon have been reported in mammals. One of them is the callipyge phenotype in sheep, which appears in the offspring only when the mutated allele comes from the father and the wild allele comes from the mother. In review, latest concepts on the molecular mechanism underlying the callipyge phenotype are presented and the new examples in mammals are discussed.

CITATIONS (1):

Frequency of DLK1 c.639C>T polymorphism and the analysis of MEG3/DLK1/PEG11 cluster expression in muscle of swine raised in Poland
M. Oczkowicz, K. Ropka-Molik, K. Piórkowska, M. Różycki, B. Rejduch
Meat Science

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A note on biallelic expression of the IGF2 gene in the liver and brain of adult pigs

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1230-1388

Assigning DOI numbers, introducing articles from supplements and recent publications to POL-index database, maintaining anti-plagiarism detection, electronic system to proceed manuscripts and webpage of the Journal with interactive pdf files, and language correction of manuscripts published in Journal of Animal and Feed Sciences are financed in the years 2018–2019 by the Ministry of Science and Higher Education from the funds for science popularization activities, Agreement No. 631/P-DUN/2018.