Protamine mRNA is immediately translated in the developing sperm. Protamine mRNA has a longer half-life than most other mRNAs in the developing sperm. The signals for the timing of protamine mRNA translation and breakdown are contained in the trailer region. Compartments a. Compartments have been defined in insect epidermis by clonal restriction lines. All cells within a compartment share the same positional values.
Some compartments coincide with the realms of maternal effect genes.
Each compartment is filled by one cell clone. Principle of Default Programs A. State the principle of default programs in development. B. Illustate the principle using two examples. Lymnea peregra . Characterize the difference between the two phenotypes at this stage.