What is true about the phosphorylation of condensins by M-Cdk?

Choose one:

A. It triggers their assembly onto DNA, keeping sister chromatids held together.

B. It marks them for degradation, allowing sister chromatids to separate.

C. It triggers their assembly onto DNA, allowing chromosomes to decondense.

D. It triggers their assembly onto DNA, compressing chromosomes into a more compact form.

E. It marks them for degradation, allowing chromosomes to decondense.

It triggers the assembly of condensins onto DNA, compressing chromosomes into a more compact form. The correct answer is D) It triggers their assembly onto DNA

The phosphorylation of condensins by M-Cdk is an important step in mitosis. Condensins are protein complexes that help to organize and condense DNA into a more compact form, making it easier to separate the chromosomes during cell division.

When M-Cdk phosphorylates condensins, it triggers their assembly onto DNA. This assembly results in the formation of a compact chromosome structure, which allows for efficient segregation of sister chromatids during mitosis.

Without this phosphorylation, the chromosomes would remain too loosely packed and would not be able to properly condense and segregate. Therefore, the phosphorylation of condensins by M-Cdk is a crucial step in the process of cell division.

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