D2.2 Gene expression Quiz
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5 questions, one answer each
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1. Transcription factors bind to:
- A. Ribosomes
- B. Specific DNA base sequences
- C. tRNA
- D. The cell membrane
2. Methylation of cytosine in a promoter usually:
- A. Activates transcription
- B. Represses transcription
- C. Changes the base sequence
- D. Speeds translation
3. The transcriptome is:
- A. All genes in the cell
- B. All mRNA being transcribed at a given time
- C. All proteins made
- D. All chromosomes
4. Epigenetic changes alter:
- A. Genotype only
- B. Phenotype but not genotype
- C. Base sequences
- D. Neither phenotype nor genotype
5. Ligers are larger than tigons because:
- A. They have more chromosomes
- B. Not all epigenetic tags are removed from gametes
- C. Lions have mutated growth genes
- D. They are fed more