title: Study of genetic variation of myostatin (MSTN) and calpastatin (CAST) genes in two native Iraqi sheep by PCR-RFLP technique
abstract: The study aimed to research the genetic variation of the Awassi and Naimi sheep breeds using the two genes myostatin (MSTN) and calpastatin (CAST). Blood samples were collected from 100 animals of the two breeds, and then DNA was extracted using a commercial kit. We used the PCR and RFLP techniques to determine genotypes and allele frequencies. The results showed that the MSTN and CAST genes are polymorphic. The MSTN gene has allelic frequencies (M and m) of 0.81, 0.19, and 0.76, 0.24 in the Awa
journal: Al-mağallaẗ al-ʻirāqiyyaẗ li-l-ʻulūm al-bayṭariyyaẗ/Iraqi journal of veterinary sciences