Chapter_12_Outline - Chapter 12- The Cell Cycle I. The Key...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 12- The Cell Cycle I. The Key Roles of Cell Division A. Cell division enables sexually reproducing organisms to develop from a single cell, produces progeny from some multicellular organisms, and functions in renewal and repair (replacing cells that die from normal wear and tear or accidents). B. Eukaryotic genomes usually consist of a number of DNA molecules, or chromosomes. C. In preparation for cell division, a cell first duplicates its DNA and condenses its chromatin. Then, mitosis and cytokinesis follow each other. D. First the new cells have one set of 23 chromosomes from each parent through meiosis, yielding daughter cells that have half as many chromosomes as the parent cell. Then fertilization fuses two gametes together and doubles the chromosome number to 46 again. II. The Mitotic Cell Cycle A. Phases of Cell Cycle: B. mitotic (M) phase: mitosis and cytokinesis; division of the nucleus and cytoplasm respectively C. interphase: G 1 phase, S phase, G 2 phase; “first gap”, chromosomes duplicated - synthesis of DNA, and “second gap” respectively D. Phases of Mitosis: E. prophase, prometaphase, metaphase, anaphase, telophase. F.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 06/15/2010 for the course FDST 4080 taught by Professor Pegg during the Spring '10 term at University of Georgia Athens.

Page1 / 2

Chapter_12_Outline - Chapter 12- The Cell Cycle I. The Key...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online