Based on chemical properties of DNA, what is the purpose of salt water in the extraction procedure?

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Based on chemical properties of DNA, what is the purpose of salt water in the extraction procedure?

Salt water consists of positively charged sodium ions. Note that uncharged DNA molecules tend to aggregate with one another.

2006-09-20 17:31:59 · 2 answers · asked by Ang G 1 in Science & Mathematics ➔ Biology

2 answers

the positively charged sodium ions from the salt in an extraction solution are attracted to the negatively charged phosphate groups on the DNA backbone this neutralizes the DNA's electric charge. This neutralization allows the DNA molecules to group together.

2006-09-23 18:54:11 · answer #1 · answered by piper171717 2 · 0⤊ 0⤋

changing the Ph of the solution

2006-09-21 01:36:34 · answer #2 · answered by MSFinances 2 · 0⤊ 0⤋