Comparisons of neanderthal dna revealed that there are more similarities to non-african dna than reference sequences from west africans. Additionally, scientists found that neanderthal dna is as closely related to east asians as to europeans. This indicates that interbreeding occurred before human migration further east. What process of population genetics generated these results?.

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