An experiment was done to see the effect of auxin: cytokinin ratios on morphogenesis can also be seen in crown gall tumors by mutation of the T-DNA of the Agrobacterium Ti plasmid,

I) Mutating the ipt gene (the tmr locus) of the Ti plasmid blocks zeatin biosynthesis in the infected cells

II) mutating either of the genes for auxin biosynthesis (tms locus)

Given some results about these above mutations ,

a) equal auxin to cytokinin ratio form undifferentiated callus tissue

b) high auxin:cytokinin ratio in the tumor cells causes the proliferation of roots instead of undifferentiated callus tissue

c) lowers the auxin:cytokinin ratio and stimulates the proliferation of shoots

What would be the result of these two mutation ?

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#Question id: 28673

#Unit 2. Cellular Organization

Which protein activity involve to facilitate the activating an initial small pool of cyclin B/1 at the centrosome and also facilitate centrosome Maturation?

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#Question id: 3573

#Unit 8. Inheritance Biology

Homozygous yellow and round seed was crossed with green and wrinkle seed plant. All F1 offspring having yellow and round seed plant were allowed to self fertilization. What is the proportional of F2 plant heterozygous for both characters?

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#Question id: 21135

#Unit 12. Applied Biology

Role of RelA__

a) Antibiotic production under conditions of nitrogen limitations

b) Synthesize pppGpp in vitro from GTP and ATP

c) Initiating the transcription of Antibiotic Synthesis Genes

d) Antibiotic production under conditions of calcium limitation

e) under limitation condition synthesize secondary metabolism

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#Question id: 15366

#Unit 4. Cell Communication and Cell Signaling

For pro-proliferation signaling pathways to cause uncontrolled proliferation, as is seen in cancer, this p53 up-regulation must not occur, It is therefore not surprising that p53 is inactive in most human tumors through loss of p53 function itself, down-regulation of positive regulators (PR) of p53 or up-regulation of negative regulators (NR) of p53, these regulators are accordingly

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#Question id: 9276

#Unit 6. System Physiology – Plant

The carotenoid b-carotene, whose structure and absorption spectrum at,