A science researcher has developed a computer model of the process of DNA replication in a eukaryotic cell. The model includes the following sequence of bases in one strand of the DNA molecule.

The researcher wants to revise the model to show the transcription of DNA to form mRNA.

Scientists have observed that the same gene may produce several different mRNA molecules. How could the researcher's model show this variety of mRNA molecules? Identify the stage that introduces this variety.

Subduction zones form when an oceanic plate collides with another oceanic plate or continental plate. the continental crust is lighter and less dense than oceanic crust. continental crust's density is approximately 2.7 grams per cubic centimeter. oceanic crust is thinner and the average density is about 3.3 cubic centimeters. when the two crustal plates converge the oceanic plate always bends and subducts beneath a continental plate. once the oceanic crust subjects, the rocks are subjected to changes in heat and pressure. because of this, we would expect to find rocks in the area of a subduction. a) clastic b) igneous c) metamorphic d) sedimentary