Menstruasi biasanya datang sebulan sekali dengan siklus bervariasi antara a. 15-20 hari b. 20-25 hari c. 25-28 hari d. 28-30 hari

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."

yes it is   dangerous

explanation:

because that foot is discusting and could get you sick