Meiosis and Mitosis Flashcards Preview

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Flashcards in Meiosis and Mitosis Deck (12):
1

Meiosis

The different stages:
Interphase
Metaphase
Anaphase
Telophase and Cytokinesis

2

Interphase

Starting cell is diploid (2n = 4)

Homologous chromosomes pit up and exchange fragments (crossing over)

3

Metaphase

Homologue pairs line up at metaphase plate

4

Anaphase

Homologues separate to opposite end of the cell

Sister chromatids stay together

5

Telophase

Newly forming cells are haploid (n=2)

Each chromosome has two (non-identical) sister chromatids

7

Interphase

Has copied DNA so the chromosomes in the nucleus each consist of two connected copies called sister chromatids.

8

Prophase

In early phosphate the cell starts to break down some structures and build others up, setting the stage for division of the chromosomes.

In late phosphate the mitotic spindle begins to capture and organize the chromosomes

9

Metaphase

In metaphase, the spindle has captured all the chromosomes and lined them up at the middle of the cell, ready to divide

10

Anaphase

In anaphase, the sister chromatids separate from each other and are pulled towards opposite ends of the cell

11

Telophase

In telophase, the cell is nearly done dividing, and it starts to re-establish its normal structures as cytokinesis (division of the cell contents) take place.

12

Cytokinesis

The division of the cytoplasm to form two new cells, overlap with the final stages of mitosis. It may start in either anaphase or telophase, depending on the cell, and finishes shortly after telophase

15

Mitosis

Needed for growth, repair and replace
Specialized cells can’t do mitosis
(Interphase)
Prophase
Metaphase
Anaphase
Telophase
(Cytokinesis)