Complex sentence: Analysis of mitochondrial DNA (mtDNA) in the Andalusian horse shows a clear link to an influx of Barb breeding, and nearly all other breeds of light and warmblood horse claim some oriental ancestry, usually through the Arabian.
Split into simpler sentences: Analysis of mitochondrial DNA (mtDNA) in the Andalusian horse shows a clear link to an influx of Barb breeding. Nearly all other breeds of light and warmblood horses have some oriental ancestry, usually through the Arabian.