By: Hannah Hastings & Autumn Crosby

Interphase Both cycles go through Interphase Gap one- DNA prepares for replicating Synthesis- Replicates to produce two

sets of identical DNA. Gap two- Cell growth and prepares for

organelles.

This is Mitosis interphase

Mitosis

This shows the Mitosis process

MitosisA process that takes place in the nucleus

to divide a cell into two daughter cells with the same chromosomes and DNA.

Mitosis involves four main phases: prophase, metaphase, anaphase, and

Telophase.

Prophase• Prophase has three stages.

1. Early Prophase: The DNA and proteins condense and become visible. Centrioles begin to move apart, and the nuclear envelop starts to disappear.

2. Middle Prophase: The process keeps continuing, and everything keeps moving.

3. Late Prophase: Centrioles go to opposite poles of the nucleus. Microtubules (spindle fibers) begin to form. Chromosomes are put in homologous pairs, and the nuclear envelope is gone.

This shows Mitosis Prophase

MetaphaseThe homologous pairs are held together by a centromere.• Kinetochores allow spindle fibers to attach to the centromere

• Kinetochores- a complex system of fibers that can be duplicated when the chromosomes divide into chromatids.• The spindle fibers push and pull the homologous pairs to the metaphase plate located in the middle of the cell.

This shows Mitosis Metaphase

Anaphase The centromeres split and

chromosomes move to the different sides of the cell.

Centrioles and spindle fibers help the chromosomes move.

The beginning of Cytokinesis.

This shows Mitosis Anaphase

Cytokenisis Cytoplasm divides Separation of nuclei

into daughter cells.

Cytokenisis & Telophase

This shows Mitosis Cytokenisis and Telophase

Telophase The nuclear envelope

begins to reappear. The Chromosome lines

disappear. Cell plate begins to form

due to Cytokinesis.

Meiosis 1

This is the Meiosis 1 process

Meiosis 1 The type of nuclear division associated

with sexual reproduction, producing four haploid cells from a single diploid cell, a process involving two cycles of division. It has been divided into the same cycles as Mitosis.

Prophase Prophase in Mitosis and Prophase in Meiosis are

different. It contains Synapsis, Tetrad, and Crossing-over. Synapsis: the pairing of homologous chromosomes Tetrad: the four haploid cells produced by one complete

meiotic division Crossing-over: the exchange of genetic information

producing a new gene.

This is Meiosis 1 Prophase

Metaphase Metaphase is the same, but in

mitosis, there are two homologous pairs, and in meiosis there are four.

This picture shows Meiosis 1 Metaphase

Anaphase Anaphase is different in Meiosis then

Mitosis because in Meiosis the sister chromatids stay together, and in Mitosis they separate.

This picture is of Meiosis 1 Anaphase

Telophase Everything in Telophase is

the same as in Mitosis.

This picture shows Meiosis 1 Telophase

Meiosis 2

The process of meiosis 2

Meiosis 2 Does not have Interphase At the end of meiosis 2 there are four

separate cells. They have half the number of

chromosomes that a cell has in Mitosis.

Works Cited

Mrs.Baas’s biology book All of the pictures came right off of

google! Class notes Dictionary.com