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DNA Fingerprinting - 2 Video Lecture | Biology Class 12 - NEET

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FAQs on DNA Fingerprinting - 2 Video Lecture - Biology Class 12 - NEET

1. What is DNA fingerprinting?
Ans. DNA fingerprinting is a technique used to identify and analyze unique patterns in an individual's DNA. It involves comparing specific regions of DNA called short tandem repeats (STRs) among different individuals to determine if they share a common genetic profile.
2. How is DNA fingerprinting performed?
Ans. DNA fingerprinting is performed by extracting DNA from a biological sample, such as blood or saliva. The DNA is then amplified using a technique called polymerase chain reaction (PCR). The amplified DNA is then separated using a process called gel electrophoresis, which creates distinct bands based on the length of the DNA fragments. These bands are then visualized and compared to determine the individual's genetic profile.
3. What are the applications of DNA fingerprinting?
Ans. DNA fingerprinting has various applications in forensic science, paternity testing, and genetic research. It is commonly used in criminal investigations to link suspects to crime scenes or identify victims. It is also used in determining biological relationships, such as establishing paternity or identifying missing persons. In genetic research, DNA fingerprinting is used to study genetic variations, population genetics, and evolutionary relationships.
4. Can DNA fingerprinting be used to determine an individual's characteristics or traits?
Ans. No, DNA fingerprinting cannot be used to determine an individual's characteristics or traits, such as eye color, height, or intelligence. DNA fingerprinting focuses on the analysis of specific regions of DNA that are highly variable among individuals but do not code for specific traits. It is primarily used for identification purposes rather than determining physical or behavioral characteristics.
5. Is DNA fingerprinting 100% accurate?
Ans. While DNA fingerprinting is highly accurate, it is not 100% infallible. The accuracy of DNA fingerprinting depends on various factors, such as the quality of the DNA sample, the techniques used in the analysis, and the interpretation of the results. Errors or contamination during sample collection, handling, or analysis can lead to false results. Therefore, it is essential for experts to follow strict protocols and quality control measures to minimize the chances of inaccuracies.
86 videos|294 docs|184 tests
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