PATHOLOGY

Detailed explanation-1: -The phases of the cell cycle. Cells in either mitosis or cell division (also called cytokinesis) are in the M phase, whereas those in the other three phases (G1, S, and G2) are in the interphase.

Detailed explanation-2: -After the mitosis phase, the cell enters the G1 phase. Upon entry, the DNA pre-replication complexes position themselves at origins preparing for DNA replication at S phase. The G1 cyclin-CDK (cyclin D/CDK2) deactivates Cdh1, thereby activating the expression of the S-phase cyclin-CDK components (e.g. cyclin E/CDK2).

Detailed explanation-3: -The Principal Stages of M Phase (Mitosis and Cytokinesis) in an Animal Cell. The five stages of mitosis-prophase, prometaphase, metaphase, anaphase, and telophase-occur in strict sequential order, while cytokinesis begins in anaphase and continues through telophase.

Detailed explanation-4: -The G1 phase, gap 1 phase, or growth 1 phase, is the first of four phases of the cell cycle that takes place in eukaryotic cell division. In this part of interphase, the cell synthesizes mRNA and proteins in preparation for subsequent steps leading to mitosis.