Recombinant DNA Technology
Plant transformation can be obtained by

shooting DNA into plant cells with a gun
combining plant and animal cells in culture
using the E. coli bacterium to infect plant roots
infecting plants with a tobacco mosaic virus

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

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

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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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Recombinant DNA Technology
Isoschizomers recognize

same recognition site and recognition sequence
same recognition site and different recognition sequence
different recognition site and different recognition sequence
same recognition sequence but different recognition site

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