When DNA strands are separated in a gel using electrophoresis, which of the foll

Question

When DNA strands are separated in a gel using electrophoresis, which of the following will be TRUE? (Choose ALL correct answers) strands will move toward the positively charged electrode longer strands will move more slowly each "band" on the gel will be the width of the DNA strand a "ladder" of DNA strands of known sizes is embedded in the gel before electrophoresis starts Can DNA or RNA strands separated by gel electrophoresis be visualized? (Choose the ONE best answer) yes, if you detect them by using a nucleic acid stain or a labeled probe yes, if you have enough strands no, they cannot be visualized

Explanation / Answer

Hi Answer:

Q.2.When DNA strands are separated in a gel using electrophoresis, which of the following will be true..

Answer: Option A, B & D [A: Stands will move towards the positively charged electrode. B: Longer strands will move more slowly. C: A ‘ladder’ of DNA strands of known sizes is embedded in the gel before electrophoresis starts.]

Q.3. Can DNA or RNA strands separated by gel electrophoresis be visualized?

Answer: Option A. [Yes, if you detect them by using a nucleic acid strain or libelled probe]

The nucleic acids (DNA/RNA) are not visualized by the naked eye without any die or labeled probe. We must have to add some nucleic acid stain or labeling probe due to the presence of these dye we can saw the presence of nucleic acid on the gel. Normally we use ethidium bromide or gold view dye as fluorescent tag (nucleic acid stain) in agarose gel electrophoresis to visualize nucleic acids.

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.