Mutation
Dr. Rayhan Shahrear
MS Resident (Phase A, Year 1, Block 2)
Department of Anatomy, BSMMU
Guided by – Prof. K. M. Shamim
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Mutation is
• a permanent change
• in base sequence
• of the genome
• of an organism
• or in extra-chromosomal genetic elements
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Causes of Mutation
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• Benzene
• Vinyl chloride
• Formaldehyde
• Dioxane
• Acrylamide
• Ethidium
bromide
• Formaldehyde
• Dioxane
• Nicotine
• Ethanol
• Mercury
compounds
• Lead compounds
• Phenol
• Carbon disulfide
• Toluene
• Xylene
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Types of Mutation
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GGTAGCGTGTTGA
T C A A C A C G
C
G C T A C C C A
G T
A
T T
A C
G G C A C
C G T GC
G A
T
Deletion and insertion
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Reciprocal translocation
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Robertsonian translocation
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Inversion
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Normal hemoglobin
ATG GTG CAC CTG ACT CCT GAG GAG AAG TCT GCC GTT ACT
Met Val His Leu Thr Pro Glu Glu Lys Ser Ala Val Thr
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Sickle cell hemoglobin
ATG GTG CAC CTG ACT CCT GTG GAG AAG TCT GCC GTT ACT
Met Val His Leu Thr Pro Val Glu Lys Ser Ala Val Thr
D CN ASS H E H A O E F A T C A T
She has one fat catShe had ona cef atc atShe had one fat cat
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Impact of Mutation
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DMD
by deletion
in short arm
of X chromosome
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Down’s
syndrome
Translocation
of 21q
on 14
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Summary
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•Define mutation
•Develop the understanding of
• Causes of mutation
• Different types of mutation
• Effects of mutation
• Prevention of mutation
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Thank you
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Mutation