Difficulty distribution
How the classified questions are distributed by difficulty.
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Practice Recombinant DNA technology - Recombinant DNA technology and Other Tools in Biotechnology - Biotechnology previous year questions organised from real papers, with year-wise coverage and clear topic navigation.
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How the classified questions are distributed by difficulty.
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Question coverage for the most populated papers. Every active PYP paper remains listed below.
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| Paper name | Year | Attempt | |
|---|---|---|---|
Biotechnology (BT) 20232023 | 2023 |
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Biotechnology (BT) 20222022 | 2022 | |
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Biotechnology (BT) 20212021 | 2021 | |
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Biotechnology (BT) 20202020 | 2020 | |
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Biotechnology (BT) 20192019 | 2019 | |
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Biotechnology (BT) 20172017 | 2017 | |
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Biotechnology (BT) 20162016 | 2016 | |
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Biotechnology (BT) 20132013 | 2013 | |
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Biotechnology (BT) 20102010 | 2010 | |
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Practice every matching question in batches of 20, with every available option.
The number of clones to represent this fragment in genomic library with a probability of 95% are
Select the CORRECT combination of genetic components that are essential for the transfer of T-DNA segment from Agrobacterium tumefaciens to plant cells.
A 1.2 kb DNA fragment was cloned into BamHI and EcoRI sites located on a 2.8 kb cloning vector. The BamHI and EcoRI sites are adjacent to each other on the vector backbone. The vector contains an XhoI site located 300 bp upstream of the BamHI site. An internal XhoI site is present in the gene sequence as shown in the figure. The resultant recombinant plasmid is digested with EcoRI and XhoI and analyzed through 1% agarose gel electrophoresis. Assuming complete digestion with EcoRI and XhoI, the DNA fragments (in base pairs) visible on the agarose gel will correspond to:


Which of the following statement(s) is/are CORRECT about Agrobacterium tumefaciens?