GATE XL · 2023 · XL-R
Question 59: Plant development; cell and tissue morphogenesis
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Question 59
XL-RMCQ2 marksNeeds review
Consider the following four experimental observations (i, ii, iii, iv) on the effect of the FT gene on flowering transition in the shoot apical meristem (SAM) of Arabidopsis thaliana.
i) The FT promoter is active in leaves alone.
ii) The ft null mutation causes delayed flowering transition of the SAM.
iii) Expressing a recombinant FT protein fused to nuclear localization signal sequence under the endogenous promoter does not rescue the delayed-flowering phenotype of the ft null mutant.
iv) Downregulation of FT transcript in the SAM by RNA interference in the wild-type background does not alter flowering transition.
Which one of the following conclusions best explains the above observations?
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2023XL-R
GATE XL 2023 · Paper 1
Life Sciences · Original paper archive
- Section
- Section XL-R
- Question type
- Multiple choice (MCQ)
- Marks
- 2 marks
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