redfreakyppl Posted May 13, 2006 Share Posted May 13, 2006 So I'm doing this science fair project & its due SOON. Its about the genotype (the gene make-up basically) of red hair. I'm trying to come up with all the possible combinations of the genes, but I can't figure out the right equation/formula. Here's the deal: There are 8 alleles for hair color. HHHHHHHH or hhhhhhhh or Hhhhhhhh or hHhhhhhhh or HHHHHHhH, etc. How do I find the # of combinations??? Link to comment Share on other sites More sharing options...
RyanJ Posted May 13, 2006 Share Posted May 13, 2006 Wouldn't the answer be n! Or 8! which is 40,320 possible combinations? The full formula being: [math]\frac{n!}{(n-r)!}[/math] I believe Where r is the number of elements to be chosen and n is the total number of objects. Because n=r it counts as a factorial. And welcome to the forums by the way Edit: No thats not going to work actually... We have 8 possible positions but only 2 variables, h and H... Cheers, Ryan Jones Link to comment Share on other sites More sharing options...
Dak Posted May 13, 2006 Share Posted May 13, 2006 There are 8 alleles for hair color. HHHHHHHH or hhhhhhhh or Hhhhhhhh or hHhhhhhhh or HHHHHHhH' date=' etc. How do I find the # of combinations???[/quote'] actually, that looks like 2 alleles across 8 loci. if that's the case, i believe it would simply be 2^8. Link to comment Share on other sites More sharing options...
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