A) What is the difference between internal and external fertilization. Provide an example of a species that uses internal fertilization and a species that uses external fertilization B) Tell 2 advantages of assisted reproductive technologies like AI (artificial insemination) and IVF (in vitro fertilization)

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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:

answer; endometriosis;