in an experiment, a scientist decides to study the effect of exercise on cholesterol levels in people. he studies two sets of people—those who exercise every day for an hour and those who don’t exercise at all . in this case , the statement that people who exercise for an hour may have lower cholesterol levels is . to test this statement the scientist would measure cholesterol levels in exerciser and non exercisers . the cholesterol levels would be ?

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the tricuspid valve is present between right atrium and right ventricle

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.'