A&P 2 Stages of Mitosis
sister chromatids attached to each other at the centromere
What are duplicated chromosomes made during the S phase referred to as and what are they attached to each other at?
prophase, metaphase, anaphase, telophase
What are the 4 stages of mitosis?
G1 (first gap phase), S (synthesis phase), and G2 (second gap) phases
What are the three phases completed during interphase to prepare for mitosis?
Cytokinesis
What is not considered to be a phase of mitosis and involves the parental cell splitting into two identical daughter cells?
interphase
What is not considered to be a stage of mitosis and involves regular cellular functions metabolism
4
How many stages of mitosis are there?
-A belt of actin filaments constricts forming a cleavage furrow between the new nuclei -This slices through the cell and separates it into two identical daughter cells
What is the process of cytokinesis in animal cells?
-the nuclear membrane breaks down and is reabsorbed by the endoplasmic reticulum -The mitotic spindle apparatus is assembles and the chromatids fully condense
What occurs at the beginning of prophase?
-the nuclear envelope has disappeared and spindle fibers have attached to either side of each centromere -The spindle fibers then extend to the centrioles located at opposite poles of the cell
What occurs at the end of prophase?
-The centromeres divide and the sister chromatids split -The separated chromosomes are pulled towards the opposite polls
What occurs during anaphase?
The chromatids line up at the metaphase plate located at the midline of the cell
What occurs during metaphase?
The spindle apparatus is disassembled, the two new nuclei form at the poles, the chromosomes decondense, and cellular function resumes
What occurs during telophase?
The cell's organelles are doubled and the materials that will be utilized for DNA synthesis are produced
What occurs during the G1 phase?
Proteins needed for cell division are synthesized and the chromatids begin to condense
What occurs during the G2 phase?
DNA is replicated and at the conclusion, each chromosome has an exact copy
What occurs during the S phase?
During telophase
When does the process of mitosis end?
Prophase
Which phase marks the beginning of mitosis?
