A: mutation
B: heredity
C: sponso
D: attendant
举一反三
- 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
- Tumor suppressor genes encode proteins that normally restrain cell division. Mutation in one or more of these genes can lead to tumor formation.
- Genes happiness. A: code for B: are responsible for C: are associated with D: are not associated with
- Genes( )happiness. A: code for B: are associated with C: all of the above D: are responsible for
- 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
内容
- 0
2 【题文】Genes ________ happiness. A: code for B: are responsible for C: are associated with D: all of the above
- 1
The purpose of the author in mentioning the three researches is to ______. A: make a contrastive analysis of them B: illustrate the achievements in cancer therapy C: present the similarities and differences between them D: show how altered genes can cause cancer
- 2
It is ( ) for the most important person to sit at the end of the table. A: customary B: are responsible for C: Make sure D: result in
- 3
Stability genes (also called caretaker genes) encode proteins that function in the repair of major genetic defects that result from aberrant DNA replication, ionizing radiation, or environmental carcinogens.
- 4
W: Don’t you feel responsible for the mix-upM: Why should I I have no authority. How does the man feel about the problem(). A: Unconcerned. B: Upset. C: Confused. D: Responsible.