Determining the mode of inheritance and gene linkage for drosophila crosses...

7. Conclusion and discussion sections:

a. how many genes are involved in creating the eye pigment
(based on the provided data). Mode of inheritance - are the genes
autosomal or sex-linked and why, recessive or dominant and why,
and are some genes linked and why.

b. Hypothesis statement based on conclusions about linkage from
previous step (7a), and chi square test to accept or reject the hypothesis.

c. You should include punnett squares with genotypes to all generations
of all 4 crosses!

I have connected the data table that we were given, and I have also given my
explanation for crosses 1 and 3.  However, I have no idea how 2 and 4 are linked,
i have never seen a 14:1:1:4 ration before.