Mutations Mutation damage to genetic material A mutation
- Slides: 26
Mutations
Mutation: damage to genetic material A mutation is usually not beneficial. Mutagens are things that cause mutations. They include: 1. High Temperatures 2. Toxic Chemicals (pesticides, etc) 3. Radiation (nuclear and solar) 4. Microwave 5. Fruit from the store 6. Radar /cellular phone waves
TYPES OF MUTATIONS 1. Somatic = Skin cells 2. Germinal = Sperm or Egg This is more threatening because they can be passed to offspring (forever).
Types of mutations 3. Chromosomal: affecting whole or a part of a chromosome 4. Gene: changes to the bases in the DNA of one gene
How do you get mutations? Mutations can be inherited. Parent to child Mutations can be acquired. Environmental damage Mistakes when DNA is copied
Chromosome Mutations Down Syndrome Chromosome 21 does not separate correctly. They have 47 instead of 46 chromosomes Children with Down Syndrome develop slower, may have heart and stomach illnesses and vary greatly in their degree of intelligence.
Chromosome Mutations Cri-du-chat Deletion of material on 5 th chromosome Characterized by the cat-like cry made by cri-du-chat babies Varied levels of metal handicaps
Sex Chromosome Abnormalities Klinefelter’s Syndrome XXY, XXYY, XXXY Male Sterility Small testicles Breast enlargement
Sex Chromosome Abnormalities XYY Syndrome Normal male traits Often tall and thin Associated with antisocial and behavioral problems
Sex Chromosome Mutations Turner’s Syndrome X Female sex organs don't mature at adolescence sterility short stature
Sex Chromosome Mutations XXX Trisomy X Female Little or no visible differences tall stature learning disabilities limited fertility
1. Dwarfism (achondroplasia) 2. Gigantism (acromegaly)
Acromegaly: André the Giant
Some mutations even make it on SNL!
Johnny & Edgar Winter Albinism albino Africans
Other Genetic Diseases of Interest Blue People! Progeria
Chromosomal Abnormalities Turners (XO) Kleinfelters (XXY) Down Syndrome Cri du Chat
Nondisjunction of the sex chromosomes
TURNER’S SYNDROME
KLINEFELTER’S SYNDROME
Sickle Cell
Celebrities with Sickle Cell T-Boz , Mobb Deep, Tiki Barber
- Any mistake or change in the dna sequence
- What always happens when an organism mutates brainpop
- Gene flow vs genetic drift
- Genetic drift
- Gene flow vs genetic drift
- Genetic programming vs genetic algorithm
- Genetic programming vs genetic algorithm
- Section 12-1 dna
- Chapter 12 section 1 dna the genetic material
- Chapter 3 cells and tissues
- Genetic material
- Section 1 identifying dna as the genetic material
- Chapter 12 section 1 dna the genetic material
- Molecular genetics chapter 12
- Genetic material
- Molecular genetics section 1 dna the genetic material
- Which part of the cell contains genetic material
- Chapter 12 dna and rna section 12-1
- Heredity defines the passage of genetic material from –
- Somatic mutations
- Dna types of mutations
- Chromosomal mutation
- Section 4 gene regulation and mutation
- Monstrous mutations
- Point or frameshift mutation
- Types of mutations
- 4 steps of protein synthesis