Q23: Golden rice was designed to produce ________, a precursor of... - Cytogenetics, Genetics, Plant Breeding & Seed Science - RPSC Agriculture Officer 2011 | Agrigyan

Analysis of Golden Rice biofortification:

• Beta carotene: Golden Rice was genetically engineered with phytoene synthase (psy) and carotene desaturase (crtI) genes to synthesize \(\beta\)-carotene in the grain endosperm, giving it a characteristic yellow-golden color and serving as a dietary provitamin A precursor.
• Alfa carotene: Minor isomer with half the provitamin A activity.
• Gamma carotene: Intermediate carotenoid.
• Zeta carotene: Intermediate precursor in the carotene biosynthesis pathway.