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Before Chromosomes Segregate in M Phase, They and the Segregation

Question 53

Matching

Before chromosomes segregate in M phase, they and the segregation machinery must be appropriately prepared.Indicate whether the following statements are TRUE or FALSE.If false, change a single noun to make the statement true.

Premises:

Responses:

The centromere nucleates a radial array of microtubules called an aster, and its duplication is triggered by S-Cdk.

True

Each centrosome contains a pair of centrioles and hundreds of

\mathrm{Y}

-tubulin rings that nucleate the growth of microtubules.

False

Cohesins are required to make the chromosomes more compact and thus to prevent tangling between different chromosomes.
A)open-ended question

Sister chromatids are held together by condensins from the time they arise by DNA replication until the time they separate at anaphase.

Microtubule-dependent motor proteins and microtubule polymerization and depolymerization are mainly responsible for the organized movements of chromosomes during mitosis.

Premises:

The centromere nucleates a radial array of microtubules called an aster, and its duplication is triggered by S-Cdk.

Each centrosome contains a pair of centrioles and hundreds of

\mathrm{Y}

-tubulin rings that nucleate the growth of microtubules.

Cohesins are required to make the chromosomes more compact and thus to prevent tangling between different chromosomes.
A)open-ended question

Sister chromatids are held together by condensins from the time they arise by DNA replication until the time they separate at anaphase.

Microtubule-dependent motor proteins and microtubule polymerization and depolymerization are mainly responsible for the organized movements of chromosomes during mitosis.

Responses:

True

False

Correct Answer:

Premises:

Responses:

The centromere nucleates a radial array of microtubules called an aster, and its duplication is triggered by S-Cdk.

Each centrosome contains a pair of centrioles and hundreds of

\mathrm{Y}

-tubulin rings that nucleate the growth of microtubules.

Cohesins are required to make the chromosomes more compact and thus to prevent tangling between different chromosomes.
A)open-ended question

Sister chromatids are held together by condensins from the time they arise by DNA replication until the time they separate at anaphase.

Microtubule-dependent motor proteins and microtubule polymerization and depolymerization are mainly responsible for the organized movements of chromosomes during mitosis.