Cell Reproduction

The Cell Cycle Interphase- 90% of a cells life is spent in this phase (a period of growth and development) 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 Prophase: Nucleolus and nuclear membrane are removed. Centrioles move to opposite ends of the cell 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. An organism with no nucleus divides into two identical organisms by fission Budding- a small, exact copy of the adult grows from the body of the parent In regeneration, a whole new organism grows from each piece of the parent

Asexual Reproduction Starfish regeneration of arms Binary fission of bacteria Potato budding