PATHOLOGY MCQ
GENETICS AND DISEASE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Scientists have inserted genes into rice plants that
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code for enzymes that cause rice to ripen quickly
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increase the iron and beta carotene levels
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code for substances that cause allergies in people
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increase the thickness of the seed coat
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Explanation:
Detailed explanation-1: -Potrykus’ lab used an Agrobacterium-mediated transformation, where engineered bacteria inserted its DNA into the targeted rice plant embryos. This DNA contained all three genes-phytoene synthase (psy, from daffodil), phytoene desaturase (crtI from bacteria), and lycopene beta-cyclase (lcy, from daffodil).
Detailed explanation-2: -Golden rice is a variety of rice (Oryza sativa) produced through genetic engineering to biosynthesize beta-carotene, a precursor of vitamin A, in the edible parts of the rice.
There is 1 question to complete.