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7 Jan 2018

42. What happens when cohesin is cleaved by separin at themetaphase to anaphase transition?

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Related questions

Select all of the following statements that typically occur during anaphase:

_____________________

Sister chromatids are copied and separate into separate chromosomes.
The non-kinetochore microtubules elongate.
Condensin proteins assist with separation of the chromatids.
The kinetochore microtubules shorten.
Cohesin proteins are degraded.

Cytokinesis of animal cells is characterized by the appearance of a cleavage furrow. When does the cleavage furrow first start to appear?

_____________________

G1 Interphase
Anaphase
Telophase
G2 Interphase
Prophase
Metaphase

Sister chromatid segregation during anaphase is dependent on thecleavage of cohesin proteins that hold the sisters together.Predict what will happen to sister chromatid segregation in thefollowing situations. Provide a short explanation for your answer.[Note: assume the only form of securin available in the cell is theone indicated].

i) non-degradable securin:

ii) a securin mutant that cannot associate withseparase:

Sister chromatid segregation during anaphase isdependent on the cleavage of cohesin proteins that hold the sisterstogether. Predict what will happen to sister chromatid segregationin the following situations. Provide a short explanation for youranswer. [Note: assume the only form of securin available in thecell is the one indicated].

i) non-degradable securin:

ii) a securin mutant that cannot associate with separase:

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