Cell Cycle and Chromosome Dynamics

📋 Course Outline

1. Cell Cycle Terms
2. Chromosome Abnormalities
3. Programmed Cell Death
4. Cell Cycle Control Enzymes
5. Chromosome Structure

📖 1. Cell Cycle Terms

🔑 Key Concepts & Definitions

• alternation of generation - A life cycle that alternates between haploid and diploid stages.
• asexual reproduction - Reproduction without gametes; involves only one parent.
• cytokinesis - The division of the cytoplasm that occurs after nuclear division, resulting in two separate cells.
• diploid - Cells that contain two complete sets of chromosomes, one from each parent.
• haploid - Cells that contain only one set of chromosomes.
• zygote - The single-celled organism formed by the union of sperm and egg during fertilization.

📝 Essential Points

The cell cycle includes phases where the cell grows, duplicates its DNA, and divides into two daughter cells. Cytokinesis is the final step, physically separating the cytoplasm into two distinct cells. Diploid cells have two sets of chromosomes, one from each parent, while haploid cells have only one set. The alternation of generation describes a life cycle that switches between haploid and diploid stages, which is fundamental to understanding how organisms reproduce and develop. The zygote is the initial cell formed after fertilization, marking the beginning of a new organism.