Abortive transcription is when RNA Polymerase makes short transcripts, typically shorter than 10 nucleotides (nt), while still bound at the promoter.

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#Id: 6678

#Unit 3. Fundamental Processes

Group II mitochondrial introns are excised by the same mechanism as nuclear pre-mRNAs via a lariat that is held together by a 2’–5’ bond.

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#Unit 10. Ecological Principles

Species diversity - Number of species

Western Ghats have greater amphibian species diversity than the Eastern Ghats. 

The overall richness of species is concentrated in equatorial regions and tends to decrease as one moves from equatorial to polar regions.India has 390 different mammals (rated eight highest in the world); 1,232 species of birds (eighth in the world); 456 species of reptiles (fifth in the world) and 45,000 plant species, of which most are angiosperms, (fifteenth in the world)

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#Unit 6. System Physiology – Plant

Phytochromobilin is exported from the plastid to the cytosol where it autocatalytically attaches to the PHY apoprotein through a thioether linkage to a cysteine residue.

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#Id: 2756

#Unit 13. Methods in Biology

Linkers are fused with blunt-ended DNA fragments; cleavage of the linker with the appropriate restriction enzyme creates suitable cohesive protruding ends.

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#Unit 13. Methods in Biology

Lane 3 depicts the behavior of the same DNA bound to two proteins. The mobility is reduced still further because of the greater mass of protein clinging to the DNA. This is 

called a supershift.