Question

Shakti, Rattan, and Protina (varieties of maize) are rich in
A. Lysine
B. Glycine
C. Fats
D. Carbohydrates

Answer 1

Hint: Maize grain is naturally low in lysine content due to its protein composition. Most maize seed proteins are prolamins, which are found in the endosperm.

Complete step-by-step answer:
More than 50 varieties of maize exist but are usually split into five main categories: popcorn; flour corn; dent corn; flint corn; and sweet corn. Each of the varieties of maize is based on the kernel size, colour, and the amount of starch within each kernel. Shakti, Protina, and Rattan are rich in Lysine. The opaque-2 mutant variants of maize were created in the laboratory to combat the deficiency of lysine and tryptophan in maize as a result of the “All India coordinated maize improvement project” and were commercially issued in 1971. The opaque-2 mutant variants launched in the market were three distinct varieties of maize such as Rattan, Protina, and Shakti. All these synthetically developed maize varieties include the recessive mutant allele for the opaque-2 gene which encodes the leucine zipper transcription factor that causes a rise in the quantity of tryptophan and lysine in the corn kernels.

Therefore the correct answer is option A.

Note: Maize, commonly called corn, is a cereal plant from the grass family. Maize protein is lacking in tryptophan and lysine but has fair quantities of sulphur-containing amino acids (cystine and methionine). Lysine is an important amino acid. The human body cannot produce lysine, so it must be consumed in the diet. Sources are dairy, fish, meat, and eggs. Lysine is a building block for creating proteins in the body.