Created by: Deyra Suarez

The process of mitosis is divided into six stages. Interphase Prophase Metaphase Anaphase Telophase Cytokinesis

Interphase

Interphase G1

In this phase, the cell increases in mass in preparation for cell division.

S The period during which DNA

is synthesized

G2 The cell synthesizes proteins

and continues to increase in size.

Description The chromosomes are

identical chromatids connected at the center by the centromere.

Nucleolus disappears. Centioles duplicate to

form two pairs of centrioles.

Prophase

Metaphase Metaphase can occupy a

large portion of the total time of mitosis.

End of Anaphase Each pole contains a

complete compilation of chromosomes.

Anaphase

Telophase Description

the re-forming of the nuclear envelope

the sister chromatids reach opposite poles

Process With the two nuclei already at

opposite poles of the cell, the cell cytoplasm separates.

The contractile ring defines the cleavage line for the cell.

Cytokinesis

Meiosis is a two-part cell division process in organisms that sexually reproduce.

There are two phases. Meiosis I Meiosis II

Phase I Interphase

The cell undergoes a round of chromosome replication.

Prophase Each replicated chromosome pairs

with its corresponding homologous.

Metaphase Paired homologous chromosomes

line up at the center of the cell.

Anaphase Spindle fibers pull each

homologous chromosomes pair toward opposite ends.

Telophase A nuclear membrane forms

around each cluster of chromosomes.

Cytokinesis Forms two new cells.

Phase II Prophase

The chromosomes each containing two chromatids become visible.

Metaphase II, Anaphase II, Telophase II, Cytokinesis The final four stages of meiosis II are similar to those in meiosis I. However the result is four haploid daughter cells.

Four haploid cells

Mitosis Meiosis

Definition A type of cellular reproduction in which the number of chromosomes are reduced by half through the separation of homologous chromosomes.

A process of asexual reproduction in which the cell divides in two producing a replica.

Type of Reproduction Sexual Asexual

Function Sexual Reproduction Cellular Reproduction

Genetically Different Identical

Crossing Over Yes No

Chromosome Number: Reduced by half Remains the same

Number of Haploid Daughter Cells Produced

4 2

Cancer A disorder in which body cells lose the ability to control growth. Cancer cells grow rapidly and need to copy their dna more quickly

than normal cells. Cancer is a disease of the cell cycle.

Mutations Heritable changes in genetic information. Cancer can result from mutations.

Ex: Sickle Cell Disease.