A traveler was crossing the border from Canada to the United States and with a bag of Washington State apples. The customs officer at the border would not let the traveler take the apples into the United States, despite the apples originating from the United States. Why did the customs officer refuse to allow the traveler to cross the border with the apples?

The costume officer may have refuse to allow the traveler to croos the border with the apples, because they may have not been native from the United States.

Explanation:

Many agricultural fruits or vegetables from other countres, are not allow to enter the United States because they can bring pestas or disseases. This kind of apples despite being from the same country may not have been native from the United Stated.

answer; i believe its echoic memory,it is believed to last three to four seconds; good luck

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."