QUESTION IMAGE
Question
ch 8 quiz
9
a technique that separates a readable pattern of dna fragments is
2
points
multiple choice
genetic engineering
biotechnology
recombinant dna
gene probes
gel electrophoresis
Gel electrophoresis is a technique used in molecular biology. It works by applying an electric field to a gel matrix (usually agarose or polyacrylamide). DNA fragments, which are negatively - charged, move through the gel towards the positive electrode. Smaller DNA fragments move faster and farther through the gel pores than larger ones. This results in a separation of DNA fragments based on their size, creating a readable pattern (bands) that can be visualized, for example, by staining the gel with ethidium bromide.
Genetic engineering is a broader field that involves manipulating an organism's genes. Biotechnology is a wide - ranging discipline that uses biological systems for various applications. Recombinant DNA is a product of combining DNA from different sources. Gene probes are short DNA or RNA sequences used to detect specific target sequences.
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gel electrophoresis