Final answer:
Egg cells are typically arrested in the G2-like phase of the cell cycle, which is advantageous for biochemical and genetic analyses of cell-cycle controls because it allows researchers to study a large, stable population of cells right before division.
Step-by-step explanation:
The cell cycle is a series of events that cells go through as they grow and divide. During the interphase of the cell cycle, before a cell can enter cell division, it must pass through several stages, including G1, S (Synthesis), and G2. The question is referring to the stage in which egg cells are arrested. Egg cells are typically arrested in the G2-like phase, awaiting fertilization before they continue to the M (Mitosis) phase and undergo cell division. It is important to understand that during the interphase, cells grow, replicate their DNA, and prepare for division. The checkpoints in the cell cycle, such as those at the end of G1, the G2/M transition, and during metaphase, help ensure that cells divide at the correct time and maintain genomic integrity. Arresting the egg cells in a G2-like phase is advantageous for studies because it allows researchers to have a large, stable population of cells that are synchronized right before cell division, facilitating biochemical and genetic analyses of cell-cycle controls.