Transcription
Chapter Name : Molecular Basis Of Inheritance |
Sub Topic Code : 103_12_06_05_02 |
Topic Name : Transcription |
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Sub Topic Name : Transcription Unit And The Gene |
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Introduction
We learn about the various parts and functions of the transcription unit.
Pre-Requisites:
Know the basics of transcription.
Real Life Question:
Can transcription lead to mutation? Can replication go wrong sometimes? If yes. Then what happens?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Polypeptide | A linear organic polymer consisting of a large number of amino-acid residues bonded together in a chain, forming part of (or the whole of) a protein molecule. |
| Monocistronic | An mRNA molecule is said to be Monocistronic when it contains the genetic information to translate only a single protein chain. |
| Polycistronic | An mRNA molecule is said to be Polycistronic when it contains the genetic information to translate many protein chains. |
| Exons | A segment of a DNA or RNA molecule containing information coding for a protein or peptide sequence. |
| Introns | A segment of a DNA or RNA molecule that does not code for proteins and interrupts the sequence of genes. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Encyclopedia | Read about how DNA gets transcripted ant the transcription unit. |
Places to visit :
Library
Practical examples around us
| Examples | Explainations |
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What you learn in Theory:
We learn that transcription is a method of copying genetic information from DNA to RNA. Plus we get an insight into why both the strands are not copied in transcription. We learn about the transcription unit and the enzymes involved during the process of transcription.