kernel phenotype Number

Question

colored, shrunken, starchy 116
colored, full, starchy 601
colored, full, waxy 2538
colored, shrunken, waxy 4
colorless, shrunken, starchy 2708
colorless, full, starchy 2
colorless, full, waxy 113
colorless, shrunken, waxy 626

total 6708

Researchers cross a corn plant that is pure-breeding for the dominant traits colored aleurone (C1), full kernel (Sh), and waxy endosperm (Wx) to a pure-breeding plant with the recessive traits colorless aleurone (c1), shrunken kernel (sh), and starchy (wx).


The resulting F1 plants were crossed to pure-breeding colorless, shrunken, starchy plants. Counting kernels from about 30 ears of corn yields the data shown in the table.


Question: What is the order of these genes in corn?



A. The gene order is Cl-Sh-Wx.



B.The gene order is Cl-Wx-Sh.



C. The gene order is Sh-Cl-Wx.



D. Pleiotropy



E. None of the Above?

Question 2:Question: What is the calculated distance in map units (number, rounded off to 1 decimal place: example 12.3) between the genes Cl and Sh?

Question3: What is the calculated distance in map units (number, rounded off to 1 decimal place: example 12.3) between the genes Sh and Wx?

Question 4: What is the calculated distance in map units (number, rounded off to 1 decimal place: example 12.3) between the genes Cl and Wx?