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physical and chemical mutagens ppt
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physical and chemical mutagens pdf
types of mutagens pdf
In genetics, a mutagen is a physical or chemical agent that changes the genetic material, usually DNA, of an organism and thus increases the frequency of mutations above the natural background level. As many mutations can cause cancer, mutagens are therefore also likely to be carcinogens, although not always
Chemical mutagens. Genetic screens. Mutation mapping. Transposons. Transposon mutagenesis. Transgenes. Genomic rescue. Enhancer bashing. Overexpression. a b s t r a c t. The study of genetics, genes, and chromosomal inheritance was initiated by Thomas Morgan in 1910, when the first visible mutations were
Chan Ho Yin, Aurora (02690763). Chen Yiwei, Echo (01790443). Co Ngai Na, Chloe (02715283). Lam Kit Ming, Germaine (02770293). Page 2. ? Mutation. ? Spontaneous Mutation & Induced Mutation. ? Mutagen. ? Chemical Mutagens. ? Radiation. ? Biological Mutagens. ? Conclusion. Introduction. Page 3
1. Lecture 3 Mutagens and Mutagenesis. A. Physical and Chemical mutagens. B. Transposons and retrotransposons. C. T-DNA. Read: 606-612. Figs: 14.10-13. A. Screen. B. Selection. C. Lethal mutations. 1. Mutagens. 2. Mutagenesis
Biologists use the term “mutagenic activity" to describe the potency of a mutagen known to cause structural damage to the molecular units that make up the genes. The mutagenic activity of the heterocyclic amines found in cooked food is strongly affected by several features of their molecular structure. Even small structural
?Ionizing radiation includes electromagnetic waves of very short wavelength (X-rays and gamma rays), and high energy particles (? particles, ? particles and neutrons). ?X-rays, cosmic rays, gamma rays. ?More powerful than UV. ?Penetrates glass. ?Water ionizes: mutagenic effect. ?free radicals e.g. OH-. ?inactivate
8 Apr 2016 There are two different ways to load files in Mutagen, but both provide similar interfaces. The first is the Metadata. API, which deals only in metadata tags. The second is the FileType API, which is a superset of the mutagen API, and contains information about the audio data itself. Both Metadata and FileType
M U T A G E N ?. To remain buoyant, their flesh is a primarily gelatinous mass with a density slightly less than water, displaying extraordinary adaptations to the arboreal browsing lifestyle. Their immensely long appendages make them very mobile, searching the bottom for soft stationary meals that cannot
Mutagen and Mutagenesis. 1. Spontaneous mutation is rare: 2-12X 10-6 (per generation per gene). Spontaneous mutations can be caused by a. mistakes made during DNA replication (error rate 10-9) b. environmrntal effect: UV light: thymidine dimer. X-ray: break sugar-phosphate DNA back bone. Oxidative damages: G
Scholars research library. Archives of Applied Science Research, 2011, 3 (6):233-246. (scholarsresearchlibrary.com/archive.html). ISSN 0975-508X. CODEN (USA) AASRC9. 233. Scholars research library. Effect of physical and chemical mutagens on biopolmer producing strains and RAPD analysis of mutated strains.
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