100 likes | 118 Views
8.2 Cell Growth and Reproduction. Part 2. Reproduction. Interphase. G1 – rapid growth and protein production S – DNA replication G2 – cell prepares for division. Interphase. Mitosis. Prophase Chromatin coils up into chromosomes Nucleus disappears Centrioles move to opposite ends of cell
E N D
8.2 Cell Growth and Reproduction Part 2. Reproduction
Interphase • G1 – rapid growth and protein production • S – DNA replication • G2 – cell prepares for division
Mitosis • Prophase • Chromatin coils up into chromosomes • Nucleus disappears • Centrioles move to opposite ends of cell • Spindle fibers form Chromosome is made of two sister chromatids, Exact copies formed when DNA is copied during interphase Centromere – holds sister chromatids together
Mitosis • Metaphase • Spindle fibers attach to centromeres • Chromosomes line up on midline of cell
Mitosis • Anaphase • Centromeres split • Sister chromatids separate • Spindle fibers pull sister chromosomes to opposite sides
Mitosis • Telophase • Sister chromatids reach opposite ends • Chromosomes uncoil • Nucleus forms around each set of chromatin
Mitosis • Cytokinesis • Cytoplasm divides • Two daughter cells are formed