tortoiseshell

The cells of developing embryo of the tortoiseshell cat randomly shut off one of the X chromosomes.

For those curious about it, a visual example of this is tortoiseshell and calico cats.

Anyone who has lived with a Tortoiseshell Cat knows another word for this: Tortitude.

Tulie is a tortoiseshell, which is basically the same thing without the white background.

Despite being expensive, tortoiseshell was attractive to manufacturers and consumers because of its beautiful mottled appearance, its durability, and its organic warmth against the skin.

So, in summary, we can't clone tortoiseshell cats because we can't clone their patterns?

For anyone interested in more on tortoiseshell in particular, the Wikipedia article is a good starting point: > Tortoiseshell was widely used from ancient times in the North and in Asia, until the trade was banned in 2014.

Well sure, you'll get one that's active, and that can't be used directly to clone a tortoiseshell cat into another tortoiseshell cat - but that will only be true until we can reactivate the inactive one.

I leave my work at work, and I use my home as a base to explore from, not as some sort of tortoiseshell to retreat into.

My words: Cannabinol, idempotence, median, mitosis, infrared, soufflé, synonym, genomics, tortoiseshell, crankshaft.

A particularly relevant (for me) passage: "Rubenstein looked like any other Wall Street elder statesman, in a blue pinstriped suit and owlish tortoiseshell glasses.

However, it's more that "female cats can be tortoiseshell" and thus the ratios will get somewhere around a 2:1 ratio of male orange cats to female orange cats.

The cloned cat "Cc" who hit the news a decade ago was a tabby-and-white clone of a calico cat; calico patterns also result from having the black coat gene on one X chromosome and the ginger coat gene on the other, which is why calico and tortoiseshell cats are almost all female, and why ginger cats are three times more likely to be male than female.

"Even if someone were to nab a cell from a developing embryo before the X-linked inactivation happened, the new cloned kitten would also randomly inactivate its X chromosomes, leaving two cloned siblings that don't have the exact same color pattern." The different colour patterns part is true for any cloned cat's markings, not just clones of a tortoiseshell.