Abstract
Developmental duplication (DD) is a monogenic autosomal recessive disease with incomplete penetrance and variable
 expressivity of Aberdeen Angus cattle, resulting in calves with twice the number of various organs and limbs of the animal. According to the literature, the frequency of mutations that cause developmental duplications in Aberdeen is high (above 20%). Single nucleotide polymorphism (SNP) g.34618072T > C in the NHLRC2 gene, which causes developmental duplication, was studied by PCR-RFLP. We screened a sample from the Belarusian population of Aberdeen-Angus cattle (n = 170 heads), which did not reveal animals carrying the mutant allele (DDC) both among the studied cows and among bulls.
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