Recombinant DNA Technology
Why is golden rice pale yellow in color?

It is rich in beta-carotene.
It is rich in chlorophyll b.
It is rich in phycobilins.
It is rich in chlorophyll a.

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Recombinant DNA Technology
An expression vector

always contains DNA segments for the regulation of mRNA production
All of these
usually contains a gene that confers antibiotic resistance to the bacterial host
always contains an origin of replication

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