Question

multiple - choice question
why do you not want the alcohol to mix with the strawberries?
because we just want an alcohol layer above to separate the dna
because we dont want the strawberry dna to dissolve
because we just want the strawberry layer at the top of the mixture
rewatch

Explanation:

In DNA extraction, alcohol is less dense than the strawberry - containing solution. By not mixing, an alcohol layer forms above. DNA is less soluble in alcohol, so it precipitates (separates) at the interface between the strawberry solution and the alcohol layer. If alcohol mixed, this separation would be disrupted.

Answer:

Because we just want an alcohol layer above to separate the DNA.