The Genetics of Mutagens The Genetics of Mutagens 1 III. Physical Mutagens Dr. M. M. Daddona A. Heat Heat causes molecules to move more rapidly. DNA breaks. What types of mutations can be caused? Deletions, Translocations, Inversions What kinds of mutagens will increase in activity? Tautomerisms, fragile sites, faulty enzyme activity B. Radiation There are two types of radiation: Particulate radiation Electromagnetic radiation. 1. Particulate Radiation a. Alpha particles α 2p + 2n o Positive particles shot out of an unstable nuclear area Causes? Attracts - parts of DNA, repels the + parts of DNA, DNA breaks Types of Mutations b. Beta particles β Electron-like particle β− Negative particles shot out of an unstable nuclear area Causes? Attracts + parts of DNA, repels the - parts of DNA, DNA breaks Types of Mutations Deletions, Translocations, Inversions
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The Genetics of Mutagens
The Genetics of Mutagens 1
III. Physical Mutagens
Dr. M. M. Daddona
A. Heat
Heat causes molecules to move more rapidly. DNAbreaks.
What types of mutations can be caused? Deletions, Translocations, Inversions
What kinds of mutagens will increase in activity? Tautomerisms, fragile sites, faulty enzyme activity
B. Radiation
There are two types of radiation: Particulate radiation Electromagnetic radiation.
1. Particulate Radiation
a. Alpha particles α 2p+ 2no
Positive particles shot out of an unstable nuclear area Causes? Attracts - parts of DNA, repels the + parts of DNA, DNA
breaks Types of Mutations
b. Beta particles β Electron-like particle β− Negative particles shot out of an unstable nuclear area Causes? Attracts + parts of DNA, repels the - parts of DNA, DNA breaks Types of Mutations
Deletions, Translocations, Inversions
The Genetics of Mutagens
The Genetics of Mutagens 2
2. Electromagnetic Radiation Pure Energy. Travels in waves.
Longshort
The shorter the wavelength, the more energyyou are exposed to per second.