The 4,495 bp ampR fragment would appear between which ladder marks?

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Prepare for the Amgen Biotech Experience Lab Test. Study with detailed flashcards and comprehensive multiple-choice questions. Each snippet holds hints and clear explanations to support your understanding. Be ready for your ABE exam challenge!

Multiple Choice

The 4,495 bp ampR fragment would appear between which ladder marks?

Explanation:
In gel electrophoresis, DNA fragments separate by size, and a DNA ladder provides reference marks at known base-pair lengths. A fragment of 4,495 bp is about 4.5 kb, so it falls between the 4,000 bp mark and the 5,000 bp mark on the ladder. Therefore it would appear between those two marks. The other ranges correspond to fragments that are clearly shorter or longer than 4,495 bp, so they wouldn’t match this fragment.

In gel electrophoresis, DNA fragments separate by size, and a DNA ladder provides reference marks at known base-pair lengths. A fragment of 4,495 bp is about 4.5 kb, so it falls between the 4,000 bp mark and the 5,000 bp mark on the ladder. Therefore it would appear between those two marks. The other ranges correspond to fragments that are clearly shorter or longer than 4,495 bp, so they wouldn’t match this fragment.

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