Directions: In the following questions a statement of assertion (A) i...
DNA fingerprinting involves identifying differences in some specific regions in DNA sequence called as respective DNA, because in these sequences, a small stretch of DNA is repeated many times. These sequences normally do not code for any proteins, but they form a large portion of the human genome. These sequences show a high degree of polymorphism and form the basis of DNA fingerprinting. As the polymorphisms are inheritable from parents to children, DNA fingerprinting is the basis of paternity testing in case of disputes.
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Directions: In the following questions a statement of assertion (A) i...
DNA fingerprinting involves identifying differences in some specific regions in DNA sequence called as respective DNA, because in these sequences, a small stretch of DNA is repeated many times. These sequences normally do not code for any proteins, but they form a large portion of the human genome. These sequences show a high degree of polymorphism and form the basis of DNA fingerprinting. As the polymorphisms are inheritable from parents to children, DNA fingerprinting is the basis of paternity testing in case of disputes.
Directions: In the following questions a statement of assertion (A) i...
Assertion (A): DNA fingerprinting is applied in paternity testing in case of disputes.
Reason (R): It employs the principle of polymorphism in DNA sequences as polymorphisms are inheritable from parent to children.
Explanation:
DNA fingerprinting is a technique used to identify and compare the DNA sequences of individuals. It is commonly used in forensic science and paternity testing to determine biological relationships between individuals.
DNA Fingerprinting:
DNA fingerprinting involves the analysis of specific regions of an individual's DNA that vary between individuals. These regions, known as polymorphic DNA sequences, contain repetitive DNA sequences that differ in the number of repeats. The variations in these sequences are unique to each individual, except for identical twins who have the same DNA.
Application in Paternity Testing:
In paternity testing, DNA fingerprinting is used to determine the biological father of a child. The DNA profiles of the child, the alleged father, and the mother are compared to assess the likelihood of paternity. The principle behind this testing is that certain DNA polymorphisms are inherited from parents to their children. By analyzing these polymorphic regions, scientists can establish whether the alleged father shares these genetic markers with the child. If the alleged father does not share these markers, it can be concluded that he is not the biological father.
Explanation of Assertion and Reason:
The assertion (A) states that DNA fingerprinting is applied in paternity testing in case of disputes. This is true as DNA fingerprinting is commonly used in paternity cases to determine biological relationships.
The reason (R) states that DNA fingerprinting employs the principle of polymorphism in DNA sequences as polymorphisms are inheritable from parent to children. This is also true as DNA polymorphisms are passed down from parents to their offspring, allowing for the comparison of genetic markers between individuals.
Correct Answer:
Both assertion (A) and reason (R) are true, but the reason (R) is not the correct explanation of the assertion (A). DNA fingerprinting can determine paternity by comparing genetic markers, but it does not specifically rely on the inheritability of polymorphisms to establish paternity.
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