What is a mutation? Adult education activity

Slides:

Advertisements

Similar presentations

KEY CONCEPT Mutations are changes in DNA that may or may not affect observable traits/characteristics.

Advertisements

Mutations. Definition mutation A mutation is a change in an organism’s DNA – Silent mutations are changes that do not result in a change to the organisms.

SC.912.L.16.4 Explain how mutations in the DNA sequence may or may not result in phenotypic change. Explain how mutations in gametes may result in.

A mutation is a change in an organism’s DNA.

MUTATIONS SC STANDARD B-4.9: The student will exemplify ways in which new characteristics are introduced into an organism or a population.

MUTATIONS Section 11.3 pgs

What is a mutation? Adult education activity

MUTATIONS!. Is this what we mean? “Frog mutations are not typically very cute, and they’re often correlated quite directly to pollution. While frogs.

Genetic Changes 11.3.

Genetic Mutations Increasing Genetic Diversity May 4, 2010.

Ch Mutations Section Objectives:

Mutations In molecular biology and genetics, mutations are changes in the DNA sequence of a cell's genome. ntent/variation/

Mutations. A Mutation is a change in an organism’s DNA  It can occur naturally whenever a base is incorrectly copied, especially during DNA Replication.

MUTATIONS Honors Biology Section 11.6 & Biology Section 8.7 Revised 2011.

Microbial Genetics - Mutation l Mutation - Introduction –A mutation is a change in the DNA sequence that results in a change in the product protein –Mutations.

8.7 Mutations TEKS 6E The student is expected to: 6E identify and illustrate changes in DNA and evaluate the significance of these changes.

Introduction A mutation is a change in the normal DNA sequence. They are usually neutral, having no effect on the fitness of the organism. Sometimes,

the Genetic Code Shown as mRNA 5′ → 3′ 64 codons Redundant

MUTATIONS. Mutations are heritable changes in genetic information Only mutation in the GAMETES can be passed on from generation to generation There can.

8.7 Mutations A mutation is a change in an organism’s DNA. This may or may not affect phenotype.

12.4 Mutations Copyright Pearson Prentice Hall.. What Are Mutations? Changes in the nucleotide sequence of DNA (genetic material) May occur in somatic.

Unit 6 Notes: Mutations. DNA Mutations Mutations: Any change in the sequence of nitrogenous bases of DNA. Causes: – Mutagens = factors that change chemical.

Reality Science Fiction! Just silly.. 1. Some mutations affect a single gene, while others affect an entire chromosome. 2. A mutation is a change in an.

8.7 Mutations KEY CONCEPT Mutations are changes in DNA that may or may not affect phenotype.  May occur in somatic cells (aren‘t passed to offspring)

CHAPTER 14 SECTION 1 Mutations. Are mutations good or bad?  Some mutations lead to genetic disorders  Some mutations may cause a beneficial trait 

8.7 Mutations A mutation is a change in an organism’s DNA. May occur during replication. May affect a single gene, or an entire chromosome May or may not.

Mutations. What Are Mutations? Changes in the nucleotide sequence of DNA May occur in somatic cells (aren’t passed to offspring) May occur in gametes.

Section 11.3: Genetic Changes

Mutations and Nature vs. Nurture.

Gene Mutations.

Lecture 55 Mutations Ozgur Unal

Mutations Bio Explain how mutations in DNA that result from interactions with the environment (i.e. radiation and chemicals) or new combinations.

A mutation is a change in an organism’s DNA.

Mutations Bio Explain how mutations in DNA that result from interactions with the environment (i.e. radiation and chemicals) or new combinations.

Types of Mutations.

Copyright Pearson Prentice Hall

Types of point mutations

11.3 Section Objectives – page 296

A mutation is a change in an organism’s DNA.

A mutation is a change in an organism’s DNA.

A mutation is a change in an organism’s DNA.

What can you infer from this cartoon?

Some mutations affect a single gene, while others affect an entire chromosome.

Mutations. Mutations Let’s quickly review from last class… Two major types of mutations: gene mutations and chromosomal mutations One we’re focusing.

Mutations Section 12-4.

A mutation is a change in an organism’s DNA.

A mutation is a change in an organism’s DNA.

Distinguish between codon and anticodon.

A mutation is a change in an organism’s DNA.

Mutations Chapter 8.7.

SC.912.L.16.4 Explain how mutations in the DNA sequence may or may not result in phenotypic change. Explain how mutations in gametes may result in.

Adult education activity

Mutations changes in genetic material (_____).

A mutation is a change in an organism’s DNA.

A mutation is a change in an organism’s DNA.

Mutation Notes.

Copyright Pearson Prentice Hall

A mutation is a change in an organism’s DNA.

Section 20.4 Mutations and Genetic Variation

A mutation is a change in an organism’s DNA.

Presentation transcript:

What is a mutation? Adult education activity

Definition of a Mutation Any change in genetic material.

What do we do if there is a change? Some changes are responsible for causing disease, but it is necessary to have some changes to have variation in the population Examples: flowers, kittens, finch beaks, noses and ears, and freckles

How does our genetic material change? Mutations may happen in big or little chunks through rearrangements, additions, or subtractions of material

How many genes do this? Any gene has the potential to mutate Can happen anywhere Only mutations that happen in the sperm or eggs may be passed on to yourchildren Most mutations don ’ t change your body ’ s function, these are called silent mutations

What kinds of mutations are there? Point mutations – simplest change, one nucleotide is exchanged for another Mis-sense mutations – changes the triplet codon making a different amino acid appear Frameshift – one or two nucleotides are inserted or deleted which changes all codons beyond that point Nonsense – an early “ stop ” codon is made Regulatory – change in a sequence important to make proteins

Quiz Time!

Question 1 A mutation may happen in any gene. TRUE OR FALSE?

Question 1 Answer If you answered True then….you are CORRECT!

Question 2 1)Which of these is NOT a type of mutation. a) Point mutation b) Flyaway mutation c) Frameshift mutation d) Nonsense mutation

Question 2 Answer If you answered B….you are CORRECT!

What causes a mutation? Copy mistakes Mutations are a natural part of the cellular process reproduction. The cell has tools that catch and repair 99.9% of mutations. Other factors may cause extra mutations to occur or damage the “ catch and repair ” mechanism Some mutations are the second hit to a cell, for example freckles have a mutation already and another mutation makes the cell potentially cancerous

What are the other factors? These factors may include: radiation, chemical exposures, UV light (sunlight)

How do I stop this? We are all mutants. The best way to prevent excessive and dangerous mutations is to avoid prolonged UV light from the sun (use sunblock), avoid pesticides and other mutagens, and limit radiation levels to federally acceptable levels.

Quiz Time!

Question 1 1) Which of the following may cause mutations? a)Coffee b)UV light (sun light) c)Hair gel d)Vaccines

Question 1 Answer If you answered B….you are CORRECT!

Question 2 2) Most mutations are caught and repaired in the cell. TRUE or FALSE?

Question 2 Answer If you answered True….you are CORRECT!

Question 3 3) What is a mutation? a) Any change in genetic material b) When the sun is directly behind the moon c) A small green and black frog from Brazil d) A way the body kills invading cells

Question 3 Answer If you answered A then you are….CORRECT!

LEARN MORE You may use these sites to learn more about mutations, genetics, genomics, and DNA – – P/default.htmhttp:// P/default.htm

Picture References sues/fall2004/genome.htmhttp://technolog.it.umn.edu/technolog/is sues/fall2004/genome.htm