<prompt> Karyotyping of foetus may be done from all of the following except :LymphocyteMonocyteAmniocyteFibroblast  <response>: B i.e. Monocyte Although human chromosome may be visualized karyotyping in any growing tissue such as bone marrow, skin, fibroblast, amniotic fluid cells or chorionic villusQ; they are most conveniently studied in peripheral blood lymphocytes.Q 