Multiple Choice
How are temperature sensitive mutants used to determine when genes act during development?
A) Embryos can be shifted to the non-permissive temperature to inactivate the mutant gene and the effect of inactivation on subsequent stages observed.
B) Embryos can be shifted to the permissive temperature to inactivate the mutant gene and the effect of inactivation on subsequent stages observed.
C) Adults can be shifted to the non-permissive temperature to inactivate the mutant gene and the effect of inactivation on fertilization can be observed.
D) Embryos can be shifted to the permissive temperature to activate the mutant gene and the effect of activation on subsequent stages observed.
Correct Answer:

Verified
Correct Answer:
Verified
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