1. A base sequence that is part of the DNA of an organism and appears to have once coded a gene product, such as a protein or transcription factor but no longer does so is called :   A jumping gene   A selfish gene   An Oncogene   A pseudogene   Hint Half-n-half Clue   2. The series of three consecutive mRNA bases coding for one specific amino acid in a protein is called a :   transposon   codon   intron   exon   Half-n-half Clue   3. An RNA molecule that can catalyze either its own cleavage (self-splicing) or the cleavage of other RNA molecules is :   A chaperone enzyme.   A spliceosome   An inducer   A ribozyme   Half-n-half Clue   4. A series of 20 to 200 Adenine ribonucleotides that is added to the 3' end of the transcribed RNA molecule (pre-mRNA) that helps in the transportation of mRNA out of the nucleus is called :   a Shine-Dalgarno sequence   cap   trailer   the poly-A-tail   Half-n-half Clue   5. A guanine triphosphate nucleotide that binds to the 5' end of the mRNA thus increasing the stability of the synthesized RNA and enhancing translation efficiency is called a :   leader   trailer   Cap   poly-A-tail   Half-n-half Clue   6. A collection of genes including one which acts as a switch that governs the expression of the structural genes in the collection is called :   An Operon   lac operon   A regulon   Does everything have to have a name ? ? ! !   Half-n-half Clue   7. The switch of an operon is turned on if specific substance is not bound to the operator. This substance is called :   a repressor   a promoter   an operon   an activator   Half-n-half Clue