Which group of introns contain an “internal guide sequence”

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#Question id: 5174

#General Aptitude

Finding the numbers of zeros 1×3×5×7×9×------------------------ ×199.

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#Question id: 9051

#Unit 9. Diversity of Life Forms

What would happen to the seasons if Earth were tilted 35 degrees off its orbital plane instead of the usual 23.5 degrees?

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#Question id: 14089

#General Aptitude

 If the orthocentre and the centroid of a triangle are the same, then the triangle is :

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#Question id: 13028

#Unit 13. Methods in Biology

The Vir gene responsible for transcription of other vir genes needed for ssDNA synthesis and endonuclease activity and transport to the plant cell is –

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#Question id: 17659

#Unit 13. Methods in Biology

During your study of the gene for an enzyme you have isolated an amber mutation in the middle of the gene which produces a truncated form of the enzyme. By placing a +1 frameshift mutation a short distance before the amber mutation and a –1 frameshift mutation a short distance after the amber mutation you create a triple mutant that restores expression of a functional, full-length enzyme. 

a) +1 frameshift puts the amber mutation out of frame so that it is no longer read as a stop.

b) -1 frameshift is inserted after the amber so that no longer read as a stop.

c)  -1 frameshift is inserted after the amber to restore the frame of the end of the protein.

d) +1 frameshift puts the amber mutation out of frame so that it restore the frame of the end of the protein.

Which of the following is the correct prediction about the frame shift mutation?