Concepts of Genetics (11th Edition)
Concepts of Genetics (11th Edition)
11th Edition
ISBN: 9780321948915
Author: William S. Klug, Michael R. Cummings, Charlotte A. Spencer, Michael A. Palladino
Publisher: PEARSON
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Chapter 17, Problem 16PDQ
Summary Introduction

To determine: The characteristics of the Initiator elements.

Introduction: The transcription is a process in which a particular segment of DNA is copied into RNA. The process is catalyzed by an RNA polymerase enzyme. It is the first step of DNA based gene expression.

Summary Introduction

To determine: The characteristics of the BREs.

Introduction: Translation is a process of protein biosynthesis. In this process, the genetic code carried by mRNA is decoded to produce the polypeptide chain. The process follows transcription in which the DNA sequence is copied into an mRNA.

Summary Introduction

To determine: The characteristics of the DPEs.

Introduction: The TATA box is a sequence of DNA. It is found in the core promoter region of eukaryotes. The homolog of TATA box is present in prokaryotes and is called Pribnow box.

Summary Introduction

To determine: The characteristics of the MTEs.

Introduction: A core promoter is the region of the proximal promoter that contains the transcription start sites. It is the minimal stretch of DNA sequence that is sufficient to initiate the process of transcription.

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Transcription and Translation 1. What is the main function of transcription and translation? (2 marks) 2. How is transcription different in eukaryotic and prokaryotic cells? (2 marks) 3. Explain the difference between pre-mRNA and post-transcript mRNA. (2 marks) 4. What is the function of the following: (4 marks) i. the cap ii. spliceosome iii. Poly A tail iv. termination sequence 5. What are advantages to the wobble feature of the genetic code? (2 marks) 6. Explain the difference between the: (3 marks) i. A site & P site ii. codon & anticodon iii. gene expression and gene regulation 7. Explain how the stop codon allows for termination. (1 mark) 8. In your own words, summarize the process of translation. (2 marks)
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