Which of the following statements about asteroids is true? asteroids are all very large and are mostly made up of stone, iron and nickel. asteroids are all very large and are mostly made up of frozen water and gas. asteroids vary greatly in size and are mostly made up of frozen water and gas. asteroids vary greatly in size and are mostly made up of stone, iron and nickel.

a covalent bond, specfically triple bond

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.'