 Since the Y chromosome does not have any locus for the orange gene, there is no chance that an XY male could have both orange and non-orange genes together, which is what it takes to create tortoiseshell or calico coloring.One exception is that in rare cases faulty cell division may leave an extra X chromosome in one of the gametes that produced the male cat.That extra X then is reproduced in each of his cells, a condition referred to as XXY, or Klinefelter syndrome.