Seedless watermelons are achieved through the making of a triploid organism supposed to be sterile, but why do seedless watermelons sometimes contain black, apparently viable, seeds?

 

Seedless watermelons are achieved through the making of a triploid organism supposed to be sterile, but why do seedless watermelons sometimes contain black, apparently viable, seeds?

 

Because they aren't seedless.

... apparently viable, seeds?

 

To whom is this apparent?

Did you plant them?

To whom is this apparent?

Did you plant them?

 

No, hehe, I didn't plant them, but they are black and equal in appearance to viable seeds, unlike the white "seeds" that seedless varieties usualy have.