Prosecutors are showing dna evidence to a courtroom. they present an enlarged picture of an electrophoretic gel that contains bands representing strs in a suspect's dna and strs in the perpetrator's dna. this picture depicts the of the suspect and perpetrator.

DNA profile.

Explanation:

DNA fingerprinting may be defined as a technique  used to determine the individuality of the individual basis on the unique DNA sequences. DNA fingerprinting is used to find the criminals.

The agarose gel electrophoresis is used to visualize the DNA sequences of the individual. The short tandem repeats are involved in identifying the unique sequences. The picture contains STRs in a suspect's DNA and STRs in the perpetrator's DNA. The picture shows the DNA profile of the perpetrator and suspect.

Thus, the answer is DNA profile.

answer and explanation;

volcanic rocks are igneous rocks which form from lava, molten rock which has been thrust out of a volcano onto the surface of a rocky body such as an asteroid, planet, or dwarf planet.  

plutonic rocks are igneous rocks which form from subterranean chambers of molten rock or magma. plutonic rocks make up the base of continental crust as well as oceanic crust. their slow rate of formation causes them to be coarse grained since there is plenty of time for large crystals to form before the magma solidifies into rock.

the textural difference is that plutonic rocks are more coarse grained than volcanic rocks. plutonic rocks are coarse grained while volcanic are fine grained ; glassey or fragmental. since fine and coarse are adjectives the decision as to whether a rock is fine or coarse grained is generally made on the bases of whether or not the individual crystals can be seen in most if the rock.