Reference no: EM13110245
In dingbats, toenail color may be red, white, or blue. A series of crosses was made to determine the mode of inheritance of toenail color in this species. Three separate crosses, the results of which are given below, were performed using parents that may or may not have been homozygous
Cross 1: Parents= red x blue, F1= All red, F2= 61 white, 236 red and 19 blue
Cross 2: Parents= red x blue, F1=14 white, 32 red and 17 blue
Cross 3: Parents= red x white, F1=35 white, 45 red and 12 blue
a. Explain how toenail color is genetically determined.
b. Give the genotypes of all the dingbats in the above crosses. Use alphabet letters, starting with A, a.
c. Describe a hypothetical metabolic pathway that could explain the inheritance of toenail color in dingbats. The pathway must be consistent with all the data.
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