Summarize jan van helmont’s willow tree experiment. state his conclusion and the inference he made after his experiment, and explain how his data supports each. finally, relate his findings to what we know today about the overall process of photosynthesis.

the dna molecules have a negative charge because of the phosphate groups in their sugar-phosphate backbone, so they start moving through the matrix of the gel towards the positive pole. power is turned on and dna fragments migrate through gel (towards the positive electrode).

explanation:

since there are no options posted i'll give you a few examples.

a dolphin's flipper, bird's wing, cat's leg.