Estimate the approximate map distance

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A snapdragon with pink petals, black anthers and long stems was allowed to self-fertilize. From the resulting seeds, 650 adult plants were obtained. The phenotypes of these offspring were:

78 red long tan
26 red short tan
44 red long black
15 red short black
39 pink long tan
13 pink short tan
204 pink long black
68 pink short black
5 white long tan
2 white short tan
117 white long black
39 white short black.

Based on this information, what is the approximate map distance between the two linked genes?

 
 
 
 
 
 


Im thinking it is 22.4 but I am not sure, need good assistance!

 

 

Reference no: EM1388959

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