Question

mouse study
the scientists accidentally smeared the labels so that the samples are no longer identifiable. the scientists use electrophoresis gels to compare the dna collected. the results of the two tests are shown.
first test:
gel results
second test:
gel results
select all the statements below that are true.
the dna in lanes 1 and 2 are from different organisms.
the dna in lanes 3 and 4 are from the same organism.
the dna in lanes 1 and 2 are from the same organisms.
the dna in lanes 3 and 4 are from different organisms.

Explanation:

Step1: Analyze DNA in lanes 1 and 2

In the first test, the DNA bands in lanes 1 and 2 are the same. This indicates that the DNA is from the same organism.

Step2: Analyze DNA in lanes 3 and 4

In the second test, the DNA bands in lanes 3 and 4 are different. This indicates that the DNA is from different organisms.

Answer:

• The DNA in lanes 1 and 2 are from the same organisms.
• The DNA in lanes 3 and 4 are from different organisms.