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Q1: Some kinds of drain cleaners use enzymes
Q18: The figure shown illustrates how,although pines first
Q31: Which of the following is a similarity
Q36: The mass extinction at the end of
Q37: Which RNA molecule brings new amino acids
Q44: Which of the following is an example
Q54: A group of scientists proposed that mammals
Q55: A karyotype from an adult male indicates
Q59: Fossils from different species of the genus
Q60: The polymerase chain reaction (PCR)technique could be