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Which of the following shows criss cross inheritance

a) Both a and b b) Colour blindness  c) Phenyl ketonuria d) Alkapto nuria

Emulsification of fats is brought by

a) Bile Enzyme b) Bile Pigment  c) BileSalts d) All

Alimentary canal is absent in

a) Planaria b) Fasuola  c) Taenia d) Ascari