Golden rice is a bio-fortified rice developed by technology . If differs from its parental strain by possessing 'psy' gene, 'crt-1' gene and 'lyc' gene which are responsible for beta- carotene synthetsis.
(a) Name the sources of the above mentioned genes.
(b) Which disease can be controlled/prevented if a person's diet has golden rice ?

Explanation

(a) . psy. gene is obtained from Daffodil plant (Narcissus psudonarcissus).
(i) .crt -1. gene is from Erwinia auredorora bacterium
(ii) .lyc. gene is from wild - type rice endosperm .
(b) Golden rice can control Xerophthalmia.