I'm in New Jersey and Texas to ask why DNA testing kits you can buy online

are so popular this Christmas and why they're causing so much heartache

across America.

If you could go back a hundred, even a thousand years,

imagine what you would find, a Native American, a warrior, a princess.

Here in the US, TV is a wash with advertising for a new product,

something which magically promises to reveal your identity.

But a simple swab of the cheek.

I'm Lucy Ash, and in this week's assignment,

I'm asking why these DNA testing kits

are among the most sought after Christmas presents alongside iPhones, smart speakers and

playstations.

Whether you spit into a tube or swab the inside of your cheek, both for health reasons and curiosity about where you come

from.

Analyzing your chromosomes is the latest craze.

So I've tested my husband, my three children, now my two grandchildren. We're testing everybody.

I'm in a Texan restaurant chatting to a woman sitting to my left. She's a new convert to the burgeoning

industry in DNA ancestry testing?

I think everybody should do it.

We've learned so much.

I mean, in my family line, because naturally we're mixed,

we could tell you the plantation that we came from this is all

...