How would the two cells be affected by inactivating these proteins?
You are investigating two temperature-sensitive mutant cells. In one, you can inactivate shugoshin activity by raising the temperature slightly at the start of meiosis. In the other, you can similarly inactivate separase activity by raising the temperature.
What will be an ideal response?
Answer: Shugoshin inactivation: Shugoshin prevents chromatid separation by preventing separase degradation of cohesins during anaphase I. Without this protection, the chromatids would separate and prevent proper production of the proper meiosis I cells.
Separase inhibition: Separase plays no role in meiosis I, but its activity separates the sister chromatids for meiosis II. Lack of separase activity would prevent proper production of the gametes.
You might also like to view...
The process of killing or removing all of the microorganisms in or on a material is termed
A. sterilization. B. disinfection. C. sanitation. D. antisepsis.
In a well-mixed estuary, river flow is ____ tidal currents
a. greater than b. less than c. perpendicular to d. equal to
Which repair mechanism is an error-prone system that uses bypass polymerases to replicate short segments of daughter strands whose normal replication is blocked by lesions in template strand DNA?
What will be an ideal response?
Which of the following is the correct order of plant evolutionary appearance (geologically oldest to present date)?
A) angiosperms, gymnosperms, psilopsids, pteriodophytes B) gymnosperms, angiosperms, psilopsids, pteriodophytes C) psilopsids, pteriodophytes, gymnosperms, angiosperms D) pteriodophytes, gymnosperms, angiosperms, psilopsids