Presentation is loading. Please wait.

Presentation is loading. Please wait.

Bell Ringer Objective: Explain that mutations occur during DNA replication or transcription and may be random or a result of environmental agents. Question:

Published byФилипп Жеребцов Modified over 5 years ago

Similar presentations

Presentation on theme: "Bell Ringer Objective: Explain that mutations occur during DNA replication or transcription and may be random or a result of environmental agents. Question:"— Presentation transcript:

1 Bell Ringer Objective: Explain that mutations occur during DNA replication or transcription and may be random or a result of environmental agents. Question: POD page 35

2 changes in the sequence of DNA
Mutations changes in the sequence of DNA

3 Locations: Mutation in Reproductive Cells
1. Sperm and/or eggs 2. Passed to the next generation

4 Location: Somatic (Body) Cell Mutation
1. Any cell other than egg or sperm cells 2. May/may not cause problems for the individual with the mutation 3. All cells that come from the mutated cell will have the mutation → may cause cancer 4. Will NOT be passed onto their offspring

5 Mutation Type: Nitrogen Base
Point Mutation – change in one nitrogen base Original DNA – TCGATTTGA Changed DNA – TCGATATGA

6 Example of Point Mutations

7 Mutation Type: Nitrogen Base
Frameshift Mutation – single nitrogen base is added or deleted; results in a shift in the codon reading frame Original DNA – TCGATTTGA Addition – TCGAGTTTGA Deletion – TCGTTTGA

8

9 Silent Mutations

10 Mutation Type: Chromosomal Mutations
Original Chromosome – ABCDEFGHIJ (letter = gene) Deletion → ABCEFGHIJ **One or more genes is/are deleted

11 Chromosomal Deletion

12

13 Wolf-Hirschhorn syndrome

14 Mutation Type: Chromosomal Mutations
Original Chromosome – ABCDEFGHIJ Inversion → ABCFEDGHIJ ***Set of genes are flipped/inverted

15 Chromosomal Inversion

16

17 Mutation Type: Chromosomal Mutations
Original Chromosome – ABCDEFGHIJ Insertion → ABCDCDEFGHIJ ***One or more genes are re-inserted & appear more than one time ***Inserted genes may come from any chromosome

18 Chromosomal Insertion

19 Mutation Type: Chromosomal Mutations
Original Chromosome – ABCDEFGHIJ Translocation → ABCDHIJ & ABCDEFGHIJEFG **One or more genes are moved from one chromosome to another chromosome; they exchange places

20 Chromosomal Translocation

21

22 Possible Causes of Mutations
A. X-rays/exposure to radioactivity B. Exposure to UV (ultraviolet) light C. Exposure to harmful chemicals (mutagens) D. Unhealthy lifestyle → smoking, drugs, etc.

23 Mutation Mini “Lab”

24 Amoeba Sisters: on individual computers. (CC or headphones)

Download ppt "Bell Ringer Objective: Explain that mutations occur during DNA replication or transcription and may be random or a result of environmental agents. Question:"

Similar presentations

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.

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.

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.

A mutation is a change in an organism’s DNA.
Genes and mutations. What are genes? A molecular unit of heredity The name for stretches of DNA and RNA that code for a specific protein (which has a.

Genes and mutations. What are genes? A molecular unit of heredity The name for stretches of DNA and RNA that code for a specific protein (which has a.
Mutations are changes in DNA that may or may not affect phenotype.

Mutations are changes in DNA that may or may not affect phenotype.
MUTATIONS Section 11.3 pgs. 296 - 301.

MUTATIONS Section 11.3 pgs
Section 11.3 MUTATIONS Section 11.3 pgs. 296 - 301.

Section 11.3 MUTATIONS Section 11.3 pgs
Mutations Chapter 12.4.

Mutations Chapter 12.4.
Mutations Genetic Changes.

Mutations Genetic Changes.
Genetic Mutations Increasing Genetic Diversity May 4, 2010.

Genetic Mutations Increasing Genetic Diversity May 4, 2010.
MUTATIONS. Mutations are heritable changes in genetic information Only mutation in the GAMETES can be passed on from generation to generation There can.

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.

8.7 Mutations A mutation is a change in an organism’s DNA. This may or may not affect phenotype.
Mutations. Mutation effects Reproductive Cells -mutation in DNA sequence of an egg or sperm cell -mutation is passed on to offspring - possible effects.

Mutations. Mutation effects Reproductive Cells -mutation in DNA sequence of an egg or sperm cell -mutation is passed on to offspring - possible effects.
MUTATIONS. Mutant An organism expressing a mutated gene.

MUTATIONS. Mutant An organism expressing a mutated gene.
8.7 Mutations KEY CONCEPT Mutations are changes in DNA that may or may not affect phenotype.

8.7 Mutations KEY CONCEPT Mutations are changes in DNA that may or may not affect phenotype.
Genetic Changes: Mutations Chapter 11.3. I. MUTATION  ANY change in an organisms DNA sequence  Causes  Errors in replication  Transcription  Cell.

Genetic Changes: Mutations Chapter I. MUTATION  ANY change in an organisms DNA sequence  Causes  Errors in replication  Transcription  Cell.
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.

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.

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.
Mutations.

Mutations.
Mutations SBI3U Ms. Lefebvre

Mutations SBI3U Ms. Lefebvre

Similar presentations

Ads by Google