You are in a canoe going downstream (with the current). If the current is traveling 5mi/hr, and you are rowing 12 mi/hr, what is the velocity of the canoe

The velocity of the canoe is 7 mi/hr.

Explanation:

Given that,

Speed of current,

Speed of the person,

We need to find the velocity of the canoe. Here, the person is going downstream with the current. So, the velocity of canoe is given by :

So, the velocity of the canoe is 7 mi/hr. Hence, this is the required solution.  

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.'