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anyone get the DROSOPHOLIA one?

Discussion in 'MCAT Discussions' started by PeruvianDoctor, Apr 19, 2004.

  1. PeruvianDoctor

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    The one about the X chromosome?? WTF was that about?
     
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  3. Nuel

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    Do you mean the that about eye color? vg and vg+? After having a hard time with PS and VR, I was wise enough to do it last. It made sense to me, there probably wasn't any need to skip it. However, it was thinky.
     
  4. benzino

    benzino Junior Member
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    I had that passage too...I found it quite difficult to understand...anyone know the answer for the question of which genes were x-linked?
     
  5. EvoDevo

    EvoDevo Forging a Different Path
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    yes, vg and vg+ were x-linked.
     
  6. superdevil

    superdevil planning my escape
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    vg and vg+? thank god. so that's one down, 76 to go.....
     
  7. bigdan

    bigdan SDN Donor
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    EvoDevo-
    How do we know that they're X-linked?

    dc
     
  8. Nuel

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    it was stated in the passage that X-linked genes are usually expressed in the males since the Y chromosome has few genes. On the table only the vg and vg+ alleles were expressed in males and females so it was my guess--i couldn't really justify it, but that was where my reasoning led me.
     
  9. premyo2002

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    You have to look at the ratio of the F2 generation.
     
  10. blz

    blz Senior Member
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    I didn't have this passage but if they gave you data you could tell if they were linked by looking at whether or not there was deviation from typical mendelian ratios.
     
  11. IcedCube

    IcedCube Senior Member
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    the other answers were two different genes, ie vg+ and v+ or something. only vg and vg+ were the same allele...
     

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