Nonetheless, “scientifically, the required results could be achieved by the successive interbreeding of... single - colored animals that carried recessive genes for spottedness, ” explains scholar Nahum Sarna, and“ such animals are detectable by... [their] hybrid vigor. ”
ईश्‍वरी मार्गदर्शनाखाली, याकोबाला त्या हव्या असलेल्या रंगात उत्कृष्ट प्रतीचे प्राणी वाढवता आले.