Medical MCQ - Why fetal cells continue to divide but terminally differentiated adult cells do not divide -

Why fetal cells continue to divide but terminally differentiated adult cells do not divide –

There are many cyclin inhibitors which prevent cell to enter into S phase in adult

Phosphatase absent in fetal cells

Proteinase is absent in fetus

Absence of CD kinase

Question Category:

Correct Answer:

There are many cyclin inhibitors which prevent cell to enter into S phase in adult

Description:

A cyclin-dependent kinase inhibitor protein is a protein which inhibits cyclin-dependent kinase. Several function as tumor suppressor genes. Cell cycle progression is negatively controlled by cyclin-dependent kinases inhibitors (called CDIs, CKIs or CDKIs). CDIs are involved in cell cycle arrest at the G1 phase.

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