DNA fingerprinting

MohiuddinMasum1 5,543 views 45 slides Nov 05, 2017
Slide 1
Slide 1 of 45
Slide 1
1
Slide 2
2
Slide 3
3
Slide 4
4
Slide 5
5
Slide 6
6
Slide 7
7
Slide 8
8
Slide 9
9
Slide 10
10
Slide 11
11
Slide 12
12
Slide 13
13
Slide 14
14
Slide 15
15
Slide 16
16
Slide 17
17
Slide 18
18
Slide 19
19
Slide 20
20
Slide 21
21
Slide 22
22
Slide 23
23
Slide 24
24
Slide 25
25
Slide 26
26
Slide 27
27
Slide 28
28
Slide 29
29
Slide 30
30
Slide 31
31
Slide 32
32
Slide 33
33
Slide 34
34
Slide 35
35
Slide 36
36
Slide 37
37
Slide 38
38
Slide 39
39
Slide 40
40
Slide 41
41
Slide 42
42
Slide 43
43
Slide 44
44
Slide 45
45

About This Presentation

Define DNA fingerprint and DNA fingerprinting.
Explain some terms related to DNA fingerprinting.
Describe the method of collection and preservation of biological samples.
Describe the uses of DNA fingerprinting.
Describe the types of DNA fingerprinting.
Describe the steps of DNA fingerprinting.


Slide Content

DNA Fingerprinting Dr . Md. Mohiuddin Masum Bangabandhu Sheikh Mujib Medical University Dhaka , Bangladesh.

3 2 1

Define DNA fingerprint and DNA fingerprinting Explain some terms related to DNA fingerprinting Describe the method of collection and preservation of biological samples Describe the uses of DNA fingerprinting Describe the types of DNA fingerprinting Describe the steps of DNA fingerprinting Objectives

A small set of DNA variation t hat is very likely to be different i n all unrelated individuals, t hereby being as unique to individuals a s are fingerprint DNA Fingerprint

A method used to identify an individual from a sample of DNA by looking at unique patterns in their DNA sequence DNA Fingerprinting www.yourgenome.org

Also known as, DNA Fingerprinting DNA profiling DNA testing DNA typing Genetic fingerprinting

The beginning

The beginning

The beginning

Reference sample https:// quizlet.com/chapter-2-the-crime-scene-definitions/ Terms related to DNA fingerprinting

Terms related to DNA fingerprinting P olymorphism http:// groups.molbiosci.northwestern.edu//DNA_polymorphism

Terms related to DNA fingerprinting DNA Polymorphism http:// groups.molbiosci.northwestern.edu//DNA_polymorphism Single nucleotide polymorphism ( SNP) Minisatellite or variable number of tandem repeat ( VNTR) Microsatellite or short tandem repeat (STR )

Terms related to DNA fingerprinting Junk DNA Proteomics & Genomics/Dr . Vikash Kumar Dubey 95%

Terms related to DNA fingerprinting Tandem repeat www.bio.miami.edu/dana/dox/vntr.html

Terms related to DNA fingerprinting Tandem repeat

Terms related to DNA fingerprinting Minisatellite or VNTR AGTTCGCGTGAAGTTCGCGTGAAGTTCGCGTGA https ://en.wikipedia.org/wiki/Variable_number_tandem_repeat

Terms related to DNA fingerprinting Microsatellite or STR ATGCCATGCCATGCCATGCCATGCC https ://en.wikipedia.org/wiki/Microsatellite

Terms related to DNA fingerprinting Restriction endonuclease Escheria coli EcoRI 5’ GAATTC 3’ 3’ CTTAAG 5’ 5’ G AATTC 3’ 3’ CTTAA G 5’ https:// en.wikipedia.org/wiki/Restriction_enzyme

Blood Saliva Semen Tissue from personal item From stored sample Hair follicle Sources of DNA evidence

Sources of DNA evidence

Collection & preservation of biological samples

Forensic science Paternity and maternity determination Personal identification Use of DNA fingerprinting

We all are different! Rayhan’s DNA Zobayer’s DNA DNA fingerprinting overview

So…. How do we tell people apart just by their DNA anyways? DNA fingerprinting overview

The DNA gets cut up by special scissors DNA fingerprinting overview 

The scissors can only cut the same colour DNA fingerprinting overview 

All of the cut up pieces of DNA are different sizes DNA fingerprinting overview

A special machine sorts the DNA by size DNA fingerprinting overview

Our DNA has different sizes of pieces so it makes a different pattern when it’s all cut up DNA fingerprinting overview Rayhan’s DNA Zobayer’s DNA

DNA fingerprinting overview Rayhan’s DNA Zobayer’s DNA

Restriction fragment length polymorphism (RFLP) Polymerase chain reaction amplification of short tandem repeat (PCR/STR) Types of DNA fingerprinting

RFLP Types of DNA fingerprinting DNA extraction Restriction digestion Electrophoresis Transfer of DNA to membrane Hybridization of DNA X-ray

Southern blotting Types of DNA fingerprinting: RPLP

PCR/SRT Types of DNA fingerprinting

Multiplex PCR Types of DNA fingerprinting

13 CODIS core STR loci with chromosomal position Types of DNA fingerprinting

Types of DNA fingerprinting Restriction fragment length polymorphism (RFLP) Polymerase chain reaction amplification of short tandem repeats (PCR/SRT) More sample needed Less sample needed Fresh DNA sample needed Fresh DNA sample not always mandatory No chance of amplification of contamination Chance amplification of contamination Require more time Require less time Analysis is costly. Analysis is cheap than RFLP

Single cell DNA fingerprint

DNA database http://www.investigativegenetics.com/content/4/1/22 1995 National DNA Database (NDNAD) 6 millions Combined DNA Index System (CODIS) 10 millions National DNA Database 16 millions

Future of DNA fingerprinting

DIY

goo.gl/4Gqgfb