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    • #17606
      golgicik
      Participant

      Hello!

      I need help. My professor asks me this and I could not understand it. Can you please help me to figure it out?

      I asked him after crossing lines with UAS-UPRT and Gal-4 driver, how are we going to select the flies? He gave me this:

      Flies have 4 chromosomes: 2 and 3 are useful for genetics. For each chromosomes there are two copies just like in humans:

      2nd chromosome: UAS-UPRT is homozygous

      3rd Chromosome: One chromosomes carries Repo. The other carries a marker TM6 which gives flies short bristles.

      You are starting from: 2nd chromosomes UAS-UPRT homozygous ; 3rd chromosomes wild-type homozygous

      crossed with:

      2nd chromosomes wild-type homozygous; 3rd Chromosomes Repo and TM6

      Using your knowledge of meiosis, what should you be looking for?

    • #114658
      JackBean
      Participant

      You should be looking for heterozygot in all genes in F1.

    • #114659
      golgicik
      Participant
      quote JackBean:

      You should be looking for heterozygot in all genes in F1.

      So basicly flies with short bristles?

    • #114660
      JackBean
      Participant

      Seems so to me. But they should all be the same in F1 generation.

    • #114661
      golgicik
      Participant
      quote JackBean:

      Seems so to me. But they should all be the same in F1 generation.

      Thank you. Actually, I am confused because of the repo and TM6 part.

    • #114662
      golgicik
      Participant

      It seems the answer is incorrect. I really need to figure out this. Can someone explain, please?

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