1. The ABO blood groups were discovered by :(A) Charles Darwin (B) Gregor Mendel(C) Karl Landsteiner (D) Waston2. Identical twins are born, when :(A) Two sperms fertilise two ova(B) Two sperms fertilise one ovum(C) One sperms fertilises one ovum(D) One sperm feritilises one ovum. Zygote cleaves into two cells that develop independently3. The food which gives an athelete instant energy is :(A)