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The Uneven Heating of Earth! Mastery Test
1
Select the correct answer from the drop-down menu.
Explain how the formation of sea ice affects the salinity of ocean water,
When sea ice forms in the ocean, the salinity of the surrounding ocean water
A decreases
B increases
C remains the same

answer; polycythemia is the correct answer;

ans.

dna fingerprinting is defined as a process that determines the dna characteristics of an individual. these dna characteristics are unique among individuals as their fingerprints, so it is known as dna fingerprinting.

steps of dna fingerprinting includes extraction of dna from sample, amplification of dna, restriction digestion of amplified dna, and then analysis of dna by gel electrophoresis, respectively.

thus, the next step performed by the scientist is 'to cut the amplified dna (obtained by polymerase chain reaction) by restriction enzymes that cleave the dna into fragments and their analysis.'