Lake victoria, in the african rift valley, is home to hundreds of species of cichlid fishes, each with slightly different diets and habits. all these fishes probably evolved from one or a few ancestors within the past 100,000 years, making them an example of

Adaptive radiation

Explanation:

Adaptive radiation is usually defined as a pattern of evolution that occurs in many of the organisms from a common ancestor. This type of evolution is faster than the usual evolution pattern. During the time of adaptive radiation, some type of living species leaves their habitat area and migrates into a new environment, resulting in some changes in them, that help them to survive in the new area.

For example, the cichlid fishes existing in the Lake Victoria, in the African Rift valley undergone evolution from a particular ancestor over the last 100,000 years. This shows an example of adaptive radiation.

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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.'