A: The promoter
B: The enhancer
C: The silencing
D: The guide protein synthesis
举一反三
- Operator: ( ) A: An operator is a DNA region that is working with promoter for genes to express. B: An operator is a DNA region at 5’ of a gene for a repressor to bind to prevent gene expression. C: An operator is a repressor protein to help genes to express. D: An operator is a repressor protein to inhibit genes to express.
- Which of the followings are composite parts? A: Protein generator B: Inverter C: RBS D: promoter E: enhancer
- Which of the following genes cannot be expressed? () A: α B: β C: ψβ D: δ
- Among the following genes, ( ) is the housekeeping gene. A: Ribosomal protein gene B: Hemoglobin gene C: Insulin protein gene D: Ovalbumin gene
- If two genes from a parent cell are on the same chromosome, which of the following best explains why the daughter cells may not have the same alleles as the parent for both genes? A: they are linked genes B: they are unlinked genes C: crossing-over D: genetic mutation
内容
- 0
Translate the following sentences into Chinese.Just as some biological genes can regulate other genes, some of the software genes can switch other software genes on or off.
- 1
which of following do not belong to pathogenic variations of the endogenous genes ( ) A: gene amplification B: abnormal gene expression C: invasion of the foreign genes D: gene arrangement E: point mutation
- 2
中国大学MOOC: Egg-polarity genes directly regulate which group of genes?
- 3
Which of the following elements is called “jumping genes”? A: transposons B: Plasmid, C: virulent phages D: prophage
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Which of the following statements about a protein-coding gene is NOT true? A: An enhancer is not a DNA sequence. B: It may have many exons and introns. C: The promoter region is not transcribed. D: Transcription factors can bind to the promoter region.