The figure below depicts a hypothetical scheme for synthesizing a target product in plants. A, B, and C are the precursors of a target product D, whereas E is a […]
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CSIR NET Life Science Previous Year Questions and Solution on EXTENSION OF MENDELIAN PRINCIPLES (62)
CSIR NET Life Science Previous Year Questions and Solution on applied biology
Why does overexpressing a pathway enzyme not give proportional product increase?
Engineering of metabolic pathways in plants can be achieved by introduction and overexpression of appropriate candidate gene(s) using transgenic technology. The figure given below represents a biochemical pathway in plants […]
CSIR NET Life Science Previous Year Questions and Solution on applied biology
Identifying incorrect statements about transgenic plant development
Given below are a few statements on technologies/concepts related to development of transgenic plants: A. Frequency of genetic transformation is influenced only by the genes of Agrobacterium and not by […]
CSIR NET Life Science Previous Year Questions and Solution on applied biology
Which factors do not change transgene expression when using the same T‑DNA vector?
Following statements were given regarding factors influencing variation in expression levels of transgene in transgenic plants: A. Difference in restriction enzyme sites within the T- DNA. B. Difference in copy […]
CSIR NET Life Science Previous Year Questions and Solution on applied biology
Why can a CaMV 35S-driven transgene show high mRNA but low protein?
An experiment was performed to introduce a transgenic trait in a crop plant by Agrobacterium – mediated transformation using a transgene construct in which the transgene was expressed using the […]
CSIR NET Life Science Previous Year Questions and Solution on applied biology
Why do independent transgenic events show different expression levels?
Given below is a figure representing expression levels of transgenic protein in ten independent transgenic plants generated using the same transformation vector by Agrobacterium-mediated transformation. Given below are a few […]
CSIR NET Life Science Previous Year Questions and Solution on applied biology
Why do independent transgenic plants show variable transgene expression?
Agrobacterium mediated transformation was used to generate transgenic plants using a construct with a selection marker gene “X” and a passenger gene “Y”. Expression levels of “Y” protein in eight […]
CSIR NET Life Science Previous Year Questions and Solution on applied biology
Why some overexpression lines show low expression of gene X in transgenic rice
For the generation of transgenic plant in crop improvement, one important regulatory gene ‘X’ was overexpressed in a crop plant. Out of 30 transgenic rice plants generated, 22 showed high […]
CSIR NET Life Science Previous Year Questions and Solution on applied biology
Which gene was engineered in the Flavr Savr tomato?
Which of the following genes was engineered in the “Flavr Savr” transgenic tomato variety? (1) 1-Amino cyclopropane-1-carboxylic acid synthase. (2) 1-Amino cyclopropane-1-carboxylic acid oxidase. (3) Expansin (4) Polygalacturonase. The correct […]
CSIR NET Life Science Previous Year Questions and Solution on applied biology
Approved transgenic crop for commercial cultivation in India
Which of the following transgenic crops have been approved for commercial cultivation in India? (1) Cotton (2) Brinjal (3) Cotton and Brinjal (4) Cotton, Brassica, Brinjal The correct answer is […]
