map distance between two gene loci

[CK]

Noticed ur @nottingham.ac.uk e-mail addy.  If i pass my a-levels that's
where i'm gonna be at!  And this report looks harrdddddd! :(

but it's still good, it's still good.

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j.wallis <j.wallis at ntlworld.com> wrote in message
news:IzTG6.4148$Kt2.431959 at news6-win.server.ntlworld.com...
> I really hope someone can help we with a lab report I'm having trouble
> finishing.
>
> I have to work out the map distance between two genes, buff and yellow,
> using the data below:
>
>       Spore colour arrangement                             Class total
> · 4(buff): 4(yellow)                                              2526
> · 2(buff): 2(yellow): 2(buff): 2(yellow)                  1150
> · 2(buff): 4(yellow): 2(buff) or vice versa              368
> · Asci containing only buff and yellow but
> Unequal numbers of each (e.g. 5 buff and
> 3 yellow)
> · 2(buff): 2(white): 2(black): 2(yellow)                   1508
> · 2(buff): 3(white): 1(black): 2(yellow) or               220
> 2(buff): 3(black): 1(white): 2(yellow)
> · 4(black): 4(white)                                                425
>
> Genotypes:
> by+ = buff spores
> b+y = yellow spores
> b+y+ = dark spores (wildtype)
> by = white spores
>
> We have been given the following formula:
>
> Map distance (mu) = total number of recombinant gametes X 100
>                                    Total number of all gametes
>
> Anyone any ideas how I should go about working this one out? Any help
> greatly appreciated. Pease send any emails to plyujlw at nottingham.ac.uk
>
> Thanks
>
> Jamie
>
>
>