Learning for an upcoming exam. Thank you! QUESTION: In pigs, eye color is a multi-step linear pathway.
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Hello, any help in the following question (all subparts) will be greatly appreciated. Learning for an upcoming

exam. Thank you!

QUESTION: In pigs, eye color is a multi-step linear pathway. Three mutations are available.  They are all autosomal. The three pure breeding lines are crossed to generate F1. The F1 are self crossed to generate F2.

Mutant Crosses:                    F1                                            F2

White  x  Green                      Red                              9Red:4white:3green

Green  x  Blue                         Red                              9Red:4Green:3Blue

White  x  Blue                         Red                              8 white : 16Red:8 Blue

A.  Explain the white x green cross. Are there one or two mutant gene in this cross. Are the genes linked or unlinked. Draw a pathway.




B.  Explain the Green x Blue cross. Are there one or two mutant gene in this cross. Are the genes linked or unlinked. Draw a pathway.





C.  Explain the white x blue cross. Are there one or two mutant genes in this cross. Are the genes linked or unlinked.  Draw a pathway.





D.        Combine the results to draw a complete pathway for eye color in pigs.

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