Both and heavy chain genes and κ light chain genes______.
A: are found near each other on the same chromosome
B: begin rearrangement by joining a V to a J region
C: will have the extra J regions copied into the primary transcript
D: with have the extra upstream VL regions copied into the primary transcript
E: have two membrane-spanning exons at the 3’ end of each of the constant regions
A: are found near each other on the same chromosome
B: begin rearrangement by joining a V to a J region
C: will have the extra J regions copied into the primary transcript
D: with have the extra upstream VL regions copied into the primary transcript
E: have two membrane-spanning exons at the 3’ end of each of the constant regions
C
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
- Supply chain coordination requires each stage of the supply chain to take into account the impact its actions have on other stages.
- During gene rearrangement, the δ gene of the TCR can ________. A: leave out the D region entirely B: wind up with one D region C: incorporate two D regions D: "leave out the D region entirely" and "wind up with one D region" E: "wind up with one D region" and "incorporate two D regions" F: "leave out the D region entirely", "wind up with one D region" and "incorporate two D regions"
- Supply chain coordination requires each stage of the supply chain to take into account the impact its actions have on other stages. A: 正确 B: 错误
- John and I have just been telling stories two of us. A: ourselves B: to each other C: each of us D: both
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3.____ you _____ the text yet ? Yes, we ____ it two hours ago. A: A. Did…copy…did B: B. Have…copied…have C: C. Have…copied…did D: D. Did …copy…had
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When two friends have problems, they may_______. A: have fights B: disagree with each other and argue C: not talk to each other any more D: A and B
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They have two teams, and ______ have a good chance of winning. A: all B: either C: both D: each
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I think this is the first time that we have met.( )anywhere. A: Each other have we seen never before B: Never before have we seen each other C: Never before we have seen each other D: Before have we never seen each other
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The two parties of collaboration have already _________________________________ with each other about the plan.