61.The most profound impact of the recombinant DNA technology is that is permits

62.In which one of the following types of cell divisions does crossing over of chromosomes takes place ?

63.In anaerobic respiration, the net gain of ATP per glucose molecule oxidised is :

64.Which of the following cell organelles are known as the suicidal bags, since they liberate such enzymes that can cuase breakdown of the cell ?

65.The third trophic level of a food chain is represented by