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
The order for the construction of a cDNA fragment from mRNA is to

bind oligo-dT, treat with reverse transcriptase, digest with RNase, add G residues to the 3' end, bind oligo-dC, treat with DNA polymerase
treat with reverse transcriptase, digest with RNase, add G residues to the 3' end, bind oligo-dC, treat with DNA polymerase and bind oligo-dT
bind oligo-dC, treat with reverse transcriptase, digest with RNase, add G residues to the 3' end, bind oligo-dT and treat with DNA polymerase
digest with RNase, add G residues to the 3' end, treat with reverse transcriptase, add G residues to the 3' end and treat with DNA polymerase

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Recombinant DNA Technology
A human cDNA library

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

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