Cell Reproduction The Cell Cycle 1 Interphase 90
- Slides: 10
Cell Reproduction
The Cell Cycle 1. Interphase- 90% of a cells life is spent in this phase (a period of growth and development) a. During interphase, a cell duplicates its chromosomes and prepares for cell division.
The Cell Cycle 2. Mitosis- process in which the nucleus divides to form two identical nuclei
Stages of Mitosis a. Prophase: i. Nucleolus and nuclear membrane are removed. ii. Centrioles move to opposite ends of the cell iii. Spindle fibers begin to stretch across the cell
Stages of Mitosis b. Metaphase: Pairs of chromatids line up across the middle of the cell
Stages of Mitosis c. Anaphase: i. Each centromere divides ii. Each pair of chromatids separates and moves to opposite ends of the cell.
Stages of Mitosis d. Telophase: Spindle fibers disappear and a new nucleus forms
Stages of Mitosis e. Cytokinesis: End of mitosis, resulting in two separate cells.
Reproduction • Asexual reproduction- a new organism is produced from one parent organism. o An organism with no nucleus divides into two identical organisms by fission o Budding- a small, exact copy of the adult grows from the body of the parent o In regeneration, a whole new organism grows from each piece of the parent
Asexual Reproduction Potato budding Binary fission of bacteria Starfish regeneration of arms
