Gel electrophoresis

Question

Gel electrophoresis

Quizplus · Accepted Answer

Gel electrophoresis is commonly used to identify and isolate DNA fragments by separating them based on size and charge.

Answer: A 
 Gel electrophoresis uses an electric field to cause the DNA fragments to move through the gel toward the negative end, as DNA is negatively charged.

Answer: B 
 In gel electrophoresis, smaller DNA fragments move more quickly through the gel than larger fragments, as they encounter less resistance.

Answer: D 
 Gel electrophoresis is not required for PCR reactions, as PCR amplifies specific DNA sequences without needing to separate different-sized fragments.

Answer: E 
 Gel electrophoresis is not used in allele-specific oligonucleotide hybridization, which is a technique for detecting specific DNA sequences using complementary oligonucleotide probes.

Gel Electrophoresis