If two DNA samples show identical band patterns in gel electrophoresis, what can scientists conclude?
Responses

The samples came from two different people
The samples came from two different people

The samples definitely came from the same person or identical twins
The samples definitely came from the same person or identical twins

More DNA needs to be extracted
More DNA needs to be extracted

The samples came from related family members

All Answers 1

Answered by GPT-5 mini AI
The samples definitely came from the same person or identical twins.

Explanation: identical banding patterns mean the DNA profiles match. Non-twin relatives share some bands but not an identical full pattern; unrelated people almost never have exactly the same profile. (In practice matches are reported with statistical confidence rather than absolute certainty.)