Question
SC-GB2-18-AA The diagram below shows how DNA barcoding
is done using a plant sample. Which of the following BEST
explains what happens in step W?
mole ora
STEP W
STEP X
STEP Z
STEP Y
• a. Extraction of its chloroplast genome.
• b. Amplification of targeted genes/regions using polymerase chain
reaction.
O c. The DNA fragments from PCR are cleaned to remove buffer salts
or protein contaminants and then sequenced.
• d. Gel electrophoresis is used to check the size of the copied DNA
fragments and ensure there is plenty of good-quality DNA.
Neyt nage
Answer
The BEST explanation for step W is b. Amplification of targeted genes/regions using polymerase chain reaction.