# map units

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

1. ### Zerconia2921 Bring your A-game! 2+ Year Member

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How do you do this!!

AB is 20% map units
AC is 15% map units
CD is 35% 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 7+ Year Member

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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 Bring your A-game! 2+ Year Member

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Opps Userah did it again!

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

4. ### userah 7+ Year Member

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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 5+ Year Member

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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...

6. ### userah 7+ Year Member

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oooooooo that makes sense. thanks =)

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