Meiosis, or sex cell division

By: Divina Rodriguez

Gillian Mcafee

Honors Biology

P.5

Interphase I

During interphase,

the the cell grows,

makes a copy of its

DNA, and prepares

to divide into two

cells

Prophase I

During

prophase I,

they coil and

become shorter

and thicker

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Metaphase I

The pairs of chromosomes

(bivalents) become arranged

on the metaphase plate and

are attached to the now fully

formed meiotic spindle. The

centrioles are at opposite

poles of the cell.

Anaphase I

Anaphase I begins when the

two chromosomes of each

bivalent (tetrad) separate

and start moving toward

opposite poles of the cell

as a result of the action

of the spindle

Telephase I

The final stage of

meiosis in which the

separated

chromosomes

reach the opposite

poles of the dividing

cell

Cell division & Daughter Cells

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The cell is not split into the two daughter cells

Prophase II

The nuclear

envelope has

broken down and

the spindle

apparatus forms.

Metophase II

The chromosomes

become arranged

on the metaphase

plate, and are attached

to the now fully formed

spindle

Anaphase II

The centromeres

separate and the

sister chromatids,now

individual

chromosomes,move

toward the opposite

poles of the cell.

Telephase II

A nuclear envelope forms

around each set of

chromosomes and

cytokinesis occurs,

producing four daughter

cells, each with a haploid

set of chromosomes.