Question: In a mutation experiment in yeast, 10 threonine-requiring
auxotrophs were obtained. Based on the …
In a mutation experiment in yeast, 10 threonine-requiring
auxotrophs were obtained. Based on the results of the following
complementation test:
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
|
1 |
– |
+ |
– |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
|
2 |
|
– |
+ |
+ |
+ |
– |
+ |
+ |
– |
+ |
|
3 |
|
|
– |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
|
4 |
|
|
|
– |
+ |
+ |
+ |
+ |
+ |
+ |
|
5 |
|
|
|
|
– |
+ |
– |
– |
+ |
– |
|
6 |
|
|
|
|
|
– |
+ |
+ |
– |
+ |
|
7 |
|
|
|
|
|
|
– |
– |
+ |
– |
|
8 |
|
|
|
|
|
|
|
– |
+ |
– |
|
9 |
|
|
|
|
|
|
|
|
– |
+ |
|
10 |
|
|
|
|
|
|
|
|
|
– |
How many genes are involved in the threonine pathway?
List the mutants for each gene
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