Q. Maize hybrids have been developed for higher amount of :
(a) Methionine
(b) Lysine
(c) Leucine
(d) Cysteine
Solution : Correct option : B High lysine corn contains increased levels of two amino acids lysine and tryptophane, which are essential in the diets of nonruminants. Both of these amino acids are nutritionally limiting in normal corn. This protein alteration is controlled by a single recessive gene, Opaque-2, which was discovered in 1964. Production practices for producing maximum grain yield using waxy, high-amylose, high-oil and high-lysine hybrids are similar to those for normal grain hybrids. So, maize hybrids have been developed for higher amount of lysine.