What process is shown in the diagram below?
o
a. polymerase chain reaction
(pcr)
first
cycle
o
b. gel electrophoresis
second
cycle
o
c. karyotyping
d. use of restriction enzymes
third
cycle
fourth
cycle

the dark variety, as they are not visible on the dark tree barks

explanation:

this age may represent the age of the earth's accretion, of core formation, or of the material from which the earth formed. this dating is based on evidence from radiometric age-dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples.