Question

question 2
1 pts
gel electrophoresis separates dna fragments on the basis of differences in their ________.
color
length
ph
temperature

Explanation:

Gel electrophoresis is a technique used in molecular biology. DNA is negatively - charged. When an electric field is applied in the gel (usually agarose gel), DNA fragments move towards the positive electrode. Smaller (shorter) DNA fragments move more quickly through the pores of the gel, while larger (longer) fragments move more slowly. This separation is based on the length of the DNA fragments. Color is not relevant as DNA is colorless in this context. pH and temperature are not the factors that determine the separation of DNA fragments in gel electrophoresis under normal experimental conditions.

Answer:

length