Which best describes a codon?

Subduction zones occur on earth where dense oceanic crust dives under more buoyant continental crust. these boundaries are characterized by a deep ocean trench next to a high continental mountain range, large numbers of earthquakes and volcanoes. all of this is further evidence for the a) big bang theory b) origin of the species eliminate c theory of plate tectonics d theory of natural selection 4 sedimentary rocks found high in the himalayen mountain

Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?

Which of the dna typing techniques do you think you would choose if you had to analyze a dna sample? why?