<prompt> All of the following are associated with good prognosis in childhood leukemia except:HyperdiploidyFemale sexPrecursor B-cell ALLt12; 21 translocation  <response>: c. Precursor B-cell ALLRef: Nelsons 20e p 2437, Ghai 8e p 599Precursor B-cell ALL, B-cell ALL and T-cell ALL has poor prognosis. 