The introns in pre-tRNA vary in length from 14 to 60 bases and only single intron is found in each pre-tRNA transcript A pre-tRNA intron is excised in one step  Finally, hydrolysis of GTP and ATP is required to join the two tRNA halves generated by cleavage on either side of the intron.

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#Id: 5878

#Unit 10. Ecological Principles

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#Id: 6622

#Unit 8. Inheritance Biology

Linkage 

Tendency of two or more than two gene remain together during the course of inheritance.

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#Id: 2450

#Unit 3. Fundamental Processes

The lac operator overlaps the promoter, and so the repressor bound to the operator physically prevents RNA polymerase from binding to the promoter and thus initiating RNA synthesis.

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#Id: 8679

#Unit 1. Molecules and their Interaction Relevant to Biology

The predominant hexokinase isozyme of liver is hexokinase IV (glucokinase) and it is GLUT2 dependent

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#Id: 5970

#Unit 10. Ecological Principles

Nitrogen is first limiting element