What does SNP-chip technology primarily utilize to identify individuals?

What does SNP-chip technology primarily utilize to identify individuals?

• A. Whole genome sequencing
• B. Polymerase chain reaction
• C. A glass plate with unique SNP sequences
• D. Electrophoresis gels

Answer: (C)

SNP-chip technology primarily employs a glass plate that contains unique single nucleotide polymorphism (SNP) sequences to identify individuals. This technology allows researchers to analyze a large number of SNPs simultaneously, making it a powerful tool in genetic research and personalized medicine. The glass plate is coated with oligonucleotides that are complementary to specific SNPs. When a sample of an individual's DNA is applied to the chip, hybridization occurs if there are matching SNPs. This interaction helps in determining which SNPs are present in the individual's genome. By analyzing the patterns of hybridization, scientists can identify genetic variations between individuals, which can be crucial for understanding genetic predispositions to diseases, responses to drugs, and other traits. In contrast, whole genome sequencing involves reading the entire sequence of an organism's DNA, which is a broader and more resource-intensive approach. Polymerase chain reaction (PCR) is a technique used to amplify specific DNA sequences but is not the primary tool in SNP-chip technology itself. Electrophoresis gels are typically used for separating DNA fragments based on size but are also not utilized in the SNP-chip methodology. Thus, the glass plate containing unique SNP sequences is fundamental to how SNP-chip technology operates for individual identification.

SNP-chip technology primarily employs a glass plate that contains unique single nucleotide polymorphism (SNP) sequences to identify individuals. This technology allows researchers to analyze a large number of SNPs simultaneously, making it a powerful tool in genetic research and personalized medicine.

The glass plate is coated with oligonucleotides that are complementary to specific SNPs. When a sample of an individual's DNA is applied to the chip, hybridization occurs if there are matching SNPs. This interaction helps in determining which SNPs are present in the individual's genome. By analyzing the patterns of hybridization, scientists can identify genetic variations between individuals, which can be crucial for understanding genetic predispositions to diseases, responses to drugs, and other traits.

In contrast, whole genome sequencing involves reading the entire sequence of an organism's DNA, which is a broader and more resource-intensive approach. Polymerase chain reaction (PCR) is a technique used to amplify specific DNA sequences but is not the primary tool in SNP-chip technology itself. Electrophoresis gels are typically used for separating DNA fragments based on size but are also not utilized in the SNP-chip methodology. Thus, the glass plate containing unique SNP sequences is fundamental to how SNP-chip technology operates for individual identification.