My first and my second are in HUSBANDRY,
Though one is in UNION, one ZOOLOGY.
My third is in DUBITABLY, in SUFFERABLE;
My fourth and fifth are in BUSINESS and in SEPARABLE.
My sixth is in GOAL, while my seventh’s in THRALL;
My whole is a person – a mother to all.
Who am I?
A correct answer should explain each line...
Hint:
Though this riddle is designed to look like your typical 'My first is in...' riddle, the solution is not found through the usual method for solving these. The answer is not seven letters long...