42/22 | Research Article | Animal Biotechnology

Molecular Dissection of Sex-chromosome of Four Mammalian Species for Simple Sequence Repeats (SSRs) Loci

College of Animal Biotechnology, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana- 141004 Punjab, India

Abstract

The sex-chromosomal sequences of Bos taurus, Sus scrofa, Rattus norvegicus, and Homo sapiens were retrieved from the NCBI (National Center for Biotechnology Information). SSRs were identified using MISA tool and R code. The segment of six distinct types of SSRs discovered varied greatly between species. Mononucleotide content was the most abundant while hexanucleotides were least abundant. The interesting finding was that the smaller repeat motifs were found to be more prevalent and vice versa. The pentanucleotides were less than the hexanucleotide in all the species. The Y-chromosome of Rattus norvegicus has the least number of repeats as compared to other three species.

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