In the replica-plating experiments of the Lederbergs, bacterialcolonies appeared at the same locations on each of two secondaryplates becausea. T1 phage caused the mutations to happen.b. the mutations occurred on the master plate prior to T1 exposureand prior to replica plating.c. Both a and b are true.d. Neither a nor b is true.
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In the replica-plating experiments of the Lederbergs, bacterial
colonies appeared at the same locations on each of two secondary
plates because
a. T1 phage caused the mutations to happen.
b. the mutations occurred on the master plate prior to T1 exposure
and prior to replica plating.
c. Both a and b are true.
d. Neither a nor b is true.
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