An ab Neurospora was crossed with an a + b + form. After meiosis, 1000 asci were dissected and produced the data listed in the table below. What is the linkage arrangement of these loci?
|
Spore Number |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
|
1 |
ab |
ab+ |
ab |
ab |
ab+ |
a+b+ |
ab |
|
2 |
ab |
ab+ |
ab |
ab |
ab+ |
a+b+ |
ab |
|
3 |
a+b+ |
a+b |
ab+ |
a+b |
ab+ |
a+b+ |
ab |
|
4 |
a+b+ |
a+b |
ab+ |
a+b |
ab+ |
a+b+ |
ab |
|
5 |
a+b |
a+b |
a+b+ |
a+b+ |
a+b |
ab |
a+b+ |
|
6 |
a+b |
a+b |
a+b+ |
a+b+ |
a+b |
ab |
a+b+ |
|
7 |
ab+ |
ab+ |
a+b |
ab+ |
a+b |
ab |
a+b+ |
|
8 |
ab+ |
ab+ |
a+b |
ab+ |
a+b |
ab |
a+b+ |
|
70 |
32 |
225 |
25 |
10 |
315 |
323 |
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