Question

What type of technology can be used to detect the presence of a disease allele in a strand of DNA?

a) PCR (Polymerase Chain Reaction)
b) DNA sequencing
c) CRISPR-Cas9
d) Gel electrophoresis

Answer 1

PCR (Polymerase Chain Reaction) is the technology used to detect the presence of a disease allele in a strand of DNA. It allows for the rapid amplification of a specific DNA sequence, making it effective in detecting known DNA sequences, like disease alleles, in small samples.

Step-by-step explanation:

The technology that can be used to detect the presence of a disease allele in a strand of DNA is PCR (Polymerase Chain Reaction).

PCR is a technique used to amplify specific regions of DNA for further analysis. It allows for the rapid amplification of a specific DNA sequence, making it effective for detecting the presence of a known DNA sequence, such as a disease allele, in small, crude samples.

Other options mentioned in the question, such as DNA sequencing, CRISPR-Cas9, and gel electrophoresis, have different applications in DNA analysis, but PCR is specifically designed for amplification.