• 2021-04-14 问题

    The gene that encodes Factor VIII, a protein that functions in the blood-clotting pathway, contains ___ exons. Mutations in this large gene are responsible for the most prevalent form of the blood disorder hemophilia.

    The gene that encodes Factor VIII, a protein that functions in the blood-clotting pathway, contains ___ exons. Mutations in this large gene are responsible for the most prevalent form of the blood disorder hemophilia.

  • 2022-06-07 问题

    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.

    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.

  • 2022-05-28 问题

    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

    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

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