11 Eight mutant bacteriophage strains cannot lyse a certain

11. Eight mutant bacteriophage strains cannot lyse a certain type of bacteria that can be lysed by wild-type bacteriophages. The mutant strains were allowed to infect the bacteria in a complementation test. A \"+\" indicates that lysis occurred with coinfection. A \"-\" indicates that lysis did not occur.

(a) A cistron is defined by no complementation in the _____________configuration.

Select one:

(a) cis

(b) trans

How many genes are mutated in this experiment? (use anumber not a word in the space) _____________________

Which of the following strains below are defective in the same gene as strain 7? Answer yes if the strain is defective or no if it is not.

	1	2	3	4	5	6	7	8
1	-	-	+	+	+	+	+	+
2		-	+	+	+	+	+	+
3			-	+	+	-	+	-
4				-	+	+	-	+
5					-	+	+	+
6						-	+	-
7							-	+
8								-

A cistron is defined by no complementation in the trans configuration

How many genes are mutated in this experiment?

ans 13

Strain	Defective
1	no
2	no
3	yes
4	no
5	no
6	yes
7	N/A
8	yes

11. Eight mutant bacteriophage strains cannot lyse a certain type of bacteria that can be lysed by wild-type bacteriophages. The mutant strains were allowed to

11 Eight mutant bacteriophage strains cannot lyse a certain

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