All you have to see whether or not a duplication mutation has occurred, is simply count the number of nucleotides present in the original DNA strand and compare that number to the nucleotides present in the options. The only sequence which has substantially more nucleotides would be C. Thus we know that certain portion had been duplicated if the sequence after the mutation is in fact C.
Answer:
Mats of algae called stromatolites.
Explanation:
Example of a fossil organism that has been found from the late Precambrian period is stromatolites. stromatolites are layered sedimentary formations that are produced by photosynthetic cyanobacteria. These cyanobacteria produces adhesive compounds that joins sand and other rocky materials in order to form mineral called “microbial mats”.
A virus.
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Force of gravity drives to the process of subduction zones where dense pieces of oceanic crust are pulled downward toward the mantle.
We can term subduction as the process by which oceanic crust sinks into the mantle when it collides with continental crust. Subduction destroys oceanic crust by forcing it to the mantle where it melts.
Oceanic crust is said to be subducted because they contain more mafic minerals and again it has convergent boundaries. When there is a divergent between continental crust one oceanic crust sinks into the mantle.
