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

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

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Recombinant DNA Technology
Knockout mice are created by

creating a chimera by fusing cells from two different cell lines
mutagenizing a mouse and selecting for mutant offspring
infecting the mouse with a retrovirus
transfecting embryonic stem cells with an altered gene sequence

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