A total of 174 chicken breeds are described in a publicly accessible database which scientists from the University of Göttingen and the Friedrich Loeffler Institute in Neustadt-Mariensee have built up in recent years with numerous international partners. This database, the Synbreed Chicken Diversity Panel (SCDP), includes information about a large proportion of the available chicken species and their diversity. In the accompanying scientific study, the researchers genotyped 3,235 animals for nearly 600,000 single nucleotide polymorphisms (SNPs). SNPs are variations in separate genetic building blocks at specific regions of the genome that vary between individual animals. The researchers created a family tree of exceptional completeness and detail. The results have been published in the journal BMC Genomics.
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Source: Phys.org