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map units

Discussion in 'DAT Discussions' started by Zerconia2921, May 30, 2008.

  1. Zerconia2921

    Zerconia2921 Bring your A-game!
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    How do you do this!!

    AB is 20% map units
    AC is 15% map units
    CD is 35% map units
    AD is 20% map units

    What is the correct order?

    Also in a pop of 1000 species the dominate is present in 9898 what is the herto ressive frequency.
     
  2. userah

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    draw it out it'll help you out

    D----------------A-------C-------B

    AB and AD are equidistant from each other. That means that A is between D and B. CD is 35 units away while AC is 15 units away. So that means that C is between A and B.
    D-A + A-C = Distance between D-C

    hope that helps =)
     
  3. Zerconia2921

    Zerconia2921 Bring your A-game!
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    Opps Userah did it again!

    Thanks dude your like a walking bio/chem/ochem dictionary.
     
  4. userah

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    hahahaha no problem man.

    and to prove you wrong about me being a dictionary...i have no idea how to go about that second question. Im not too big on genetics haha. damn p^2 + 2pq +q^2. and p+q=1. hope someone else can pick up the tab on that one =)
     
  5. osimsDDS

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    second questions is like this...

    10000-9898/10000 will give you the recessive.
    so 10000-9898/10000 =.01=q^2
    so find q first which will be the square root of .01 which is .1
    Then use p+q=1 to find the dominant, p+.1=1 so p=.9
    so then use 2pq to find the heterozygote frequency...

    Answer: 2(.1)(.9)=.18
     
  6. userah

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    oooooooo that makes sense. thanks =)
     
  7. Dencology

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    no wonder i had a hard time doing this. there was a typo. it is 10000 not 1000. lolo
     

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