Prolly a nanner. IF thats the case yes they will be S1 seeds copies of the original plant in every way.
Nanner is a male bit (usually sterile) that forms on a female plant. Usually its from some form of environmental stress like drought, animals grazing on the leaves, too long in flower etc.
Cannabis and other plants that have female and male plants have a built in mechanism to reproduce without a male present. Its not that common (10-20%) but a lot more common that we weed growers think.
Folks like to blame breeders for nanners but its the hamaphrodites that are breeder error. They are 50% male and 50% female. They start out that way from seed, its from genetics not from environment. Nanners are few and far between and usually sterile.