GENE EXPRESSION. Pretty Please Back doorBig Brother.

Slides:

Advertisements

Similar presentations

Control of Expression In Bacteria –Part 1

Advertisements

Definitions Gene – sequence of DNA that is expressed as a protein (exon) Genes are coded –DNA →RNA→Protein→Trait Transcription – rewritting DNA into RNA.

20,000 GENES IN HUMAN GENOME; WHAT WOULD HAPPEN IF ALL THESE GENES WERE EXPRESSED IN EVERY CELL IN YOUR BODY? WHAT WOULD HAPPEN IF THEY WERE EXPRESSED.

Warm up Mon 11/3/14 Adv Bio 1. What does the phrase “gene regulation” mean? 2. If the lac operon cannot bind to the repressor.. What would be the outcome?

Gene Regulation and Expression

Regulating Gene Expression Turning Genes On and Off.

Gene Regulation Section 12–5

JEOPARDY #2 DNA and RNA Chapter 12 S2C06 Jeopardy Review

1 Review What genes control cell differentiation during development Compare and Contrast How is the way Hox genes are expressed in mice similar and different.

12-5 Gene Regulation.

If all of your cells had a mutation in an important gene, why could that be bad?

Control of Gene Expression Big Idea 3: Living systems store, retrieve, transmit, and respond to info essential to life processes.

How Does A Cell Know? Which Gene To Express Which Gene To Express& Which Gene Should Stay Silent? Which Gene Should Stay Silent?

15.2 Regulation of Transcription & Translation

12.4 Gene Regulation and Mutation

You must answer in a complete sentence!

Do Now Where is the DNA located in the cell?

Control of gene expression Unit but different cells have different functions and look and act differently! WHY? Different sets of genes are expressed.

Gene Regulation An expressed gene is one that is transcribed into RNA

Part Transcription 1 Transcription 2 Translation.

Biology Chapter 12 Section 5 Gene Regulation. Objectives ______________a typical gene _________how lac genes are turned off and on __________how most.

DNA / RNA. tRNA rRNA mRNA 5’ 3’ Types of RNA Transcription: transfer of information from DNA to RNA in the nucleus  In the process of transcription.

Control of Gene Expression Year 13 Biology. Exceptions to the usual Protein Synthesis Some viruses contain RNA and no DNA. RNA is therefore replicated.

Gene Regulation How does your body know when to make certain proteins? Unit 4 – Chapter 12-5.

Section 2 CHAPTER 10. PROTEIN SYNTHESIS IN PROKARYOTES Both prokaryotic and eukaryotic cells are able to regulate which genes are expressed and which.

Gene Regulations and Mutations

Gene Regulation in Prokaryotes - plasmid, not protected by nuclear envelope - DNA is not bound up with histones -One of the best known pathways is the.

Eukaryotic Gene Expression. Introduction Every cell in a multi-cellular eukaryote does not express all its genes, all the time (usually only 3-5%) –Long-term.

Gene Expression. Remember, every cell in your body contains the exact same DNA… …so why does a muscle cell have different structure and function than.

Gene Expression and Regulation

Prokaryotic cells turn genes on and off by controlling transcription.

February 24, 2014 Write down definitions for: o Intron o Exon o pre-mRNA.

Welcome  In your journal write a paragraph explain what is a gene and what is gene expression?  Notes on Gene Expression Regulation  Quiz over.

Eukaryotic Gene Regulation

Translation- taking the message of DNA and converting it into an amino acid sequence.

KEY CONCEPT Gene expression is carefully regulated in both prokaryotic and eukaryotic cells. Chapter 11 – Gene Expression.

Chapter 13: Gene Regulation. The Big Picture… A cell contains more genes than it expresses at any given time – why? Why are cells in multicellular organisms.

Genes Activity  Aims:  Must be able to outline the various functions of genes.  Should be able to outline how genes can be activated and when and where.

Lesson Overview Lesson Overview Gene Regulation and Expression Do Now (notes 1.Write this original sequence of DNA bases (this is the template) 2.Use DNA.

Alessandro Raganelli and Varun Rao.  Prokaryotes and eukaryotes alter gene expression in response to their changing environment  In multicellular eukaryotes,

Click to continue How do a few genes build a diversity of body parts? There’s more in the genetic toolkit than just genes! Click your forward cursor to.

Gene Expression (Epigenetics) Chapter 11. What you need to know The functions of the three parts of an operon. The role of repressor genes in operons.

Gene Expression (Epigenetics)

DO NOW EOC REVIEW PG 199 NAME THE 3 PARTS OF THIS STRUCTURE:

Regulation of Gene Expression

Eukaryotic Gene Regulation

How does your body know when to make proteins? Unit 4 – Chapter 12-5

Prokaryote Gene Regulation

12.4 Mutations Changes in the genetic material

Gene Regulation.

Prokaryotic cells turn genes on and off by controlling transcription.

Gene Regulation Ability of an organisms to control which genes are present in response to the environment.

Prokaryotic cells turn genes on and off by controlling transcription.

Chapter 12.5 Gene Regulation.

Molecular Genetics Are we controlled by our DNA?

Gene Regulation Section 12–5

Eukaryote Regulation and Gene Expression

Control of Gene Expression in Eukaryotic cells

Protein Synthesis Lecture 5

Prokaryotic cells turn genes on and off by controlling transcription.

Gene Expression Activation of a gene to transcribe DNA into RNA.

Section 14.3 Gene Expression and Regulation Part 1

Prokaryotic cells turn genes on and off by controlling transcription.

Prokaryotic cells turn genes on and off by controlling transcription.

Prokaryotic cells turn genes on and off by controlling transcription.

13.4 Gene regulation 5/16/19 TB page

Gene regulation and expression

Gene Regulation A gene (DNA) is expressed when it is made into a functional product (protein/enzyme)

Prokaryotic cells turn genes on and off by controlling transcription.

Presentation transcript:

GENE EXPRESSION

Pretty Please Back doorBig Brother

GENE EXPRESSION Gene Expression: Process by which information from a gene is used to make a functional gene product (Proteins, tRNA, and rRNA).  The type of cell that is made is determined by the genes that are expressed. Target: I will be able to explain how DNA and genes result in the expression of traits and how genes turn on/off. Pg. 95

Regulatory Proteins: Proteins that bind to the DNA to control transcription.  They act as gene switches to turn on or off the genes. Negative Control: Transcription is controlled because the protein interferes with (stops) transcription

Positive Control: Transcription is controlled because the protein enhances (helps) transcription

All cells contain the same DNA and Genes Depending on what genes are turned on or off, will determine what cell it is and how it functions. Cell Differentiation: the genes that are turned on (or transcribed), results in different proteins being made (or translated), which makes the cell what it is. Hox Genes: Master control genes.  They control the order and location where cells, tissues and organs develop in an organism  If Hox Genes do not turn on in the right order, then body parts may develop in the wrong place.

All cells contain the same DNA and Genes Depending on what genes are turned on or off, will determine what cell it is and how it functions. Cell Differentiation: the genes that are turned on (or transcribed), results in different proteins being made (or translated), which makes the cell what it is. Hox Genes: Master control genes.  They control the order and location where cells, tissues and organs develop in an organism  If Hox Genes do not turn on in the right order, then body parts may develop in the wrong place. Summary

TURNING GENES ON AND OFF Pg. 94 Draw a picture to represent positive control of gene expression. Write a sentence explaining how the picture relates to positive control. Draw what a Hox Gene does, or what happens when it doesn’t work correctly. Draw a picture to represent negative control of gene expression. Write a sentence explaining how the picture relates to negative control.