Bernice is preparing a report on evidence for the common ancestry of species. She includes the figure of forelimbs shown. The cladogram shows the common ancestry of frogs, alligators, chickens, and horses by comparing their forelimbs. The shared root is the lobe-finned fish.

The forelimbs are an example of which of the following?

A. analogous structures
B. vestigial structures
C. homologous structures
D. convergent structures

atp is used for energy.

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.'