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 chlorophyll a.
It is rich in phycobilins.

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Recombinant DNA Technology
A human cDNA library

None of these
contains DNA for virtually all of the human proteins in vectors
cannot be used to obtain human genes because it would be radioactive
contains DNA for specific human proteins

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Recombinant DNA Technology
Knockout mice are created by

transfecting embryonic stem cells with an altered gene sequence
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

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