The mutant fly that Dr. Young identified in in the question…
The mutant fly that Dr. Young identified in in the question above contained a mutation in a gene that encoded the enzyme, ‘Casein Kinase 1’. Casein Kinase 1 phosphorylates period when it is not bound to timeless. When period is phosphorylated by Casein Kinase 1, it is degraded. Thus, period levels will be lowest [duringtheday]. This means that in the night, clock and cycle [willnot] be bound to E-boxes.
Read DetailsNext, consider what would happen if Dr. Tonegawa made the fo…
Next, consider what would happen if Dr. Tonegawa made the following TWO changes to the protocol illustrated in red below: The changes are: 1) the addition of doxycycline on days 6-8, and 2) the removal of doxycycline during the 5 days of testing in Context A. What is the best hypothesis for what will happen during testing given this change?
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