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MEIOSIS

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1. MEIOSIS
2. Meiosis is a kind of cell division
3. Stages of meiosisMeiosis steps: meiosis I, cytokinesis
4. Prophase IChromosomes comes together in pairs, each
5. Metaphase ITetrads line up on the equatorial
6. Anaphase IHomologous chromosomes separates to opposite poles
7. Telophase IMovement of homologous chromosomes continues Haploid set of chromosome formsCytokinesis occurs simultaneously.
8. Meiosis IIAfter meiosis I cells immediately begins second division, meiosis II
9. Prophase IISame as prophase I
10. Metaphase IIChromosomes stay at the equator
11. Anaphase IIChromatids moves to poles (Chromosomes split into 2 part)
12. Telophase IINucleus appearsChromosomes starts uncoil (becomes invisible)Cytokinesis begins (Dividing of cytoplasm)
13. Слайд 13
14. Слайд 14
15. Скачать презентанцию

Meiosis is a kind of cell division in which chromosome number is reduced by half.Meiosis produces haploid (n) cells with new combination.

Слайды и текст этой презентации

Слайд 1MEIOSIS

MEIOSIS

Слайд 2Meiosis is a kind of cell division in which chromosome

number is reduced by half.
Meiosis produces haploid (n) cells with

new combination.

Meiosis is a kind of cell division in which chromosome number is reduced by half.Meiosis produces haploid

Слайд 3Stages of meiosis
Meiosis steps: meiosis I, cytokinesis (interkinesis), meiosis II,

cytokinesis.
Meiosis I, each of double set of chromosome is replicated

to produce complete copy of every genes.

Stages of meiosisMeiosis steps: meiosis I, cytokinesis (interkinesis), meiosis II, cytokinesis.Meiosis I, each of double set of

Слайд 4Prophase I
Chromosomes comes together in pairs, each pair called tetrad

(complex of 4 chromatids)
Chromatids of chromosomes cross over and exchange

the genetic material.
Nucleus membrane disappears
Centrioles moves to poles

Prophase IChromosomes comes together in pairs, each pair called tetrad (complex of 4 chromatids)Chromatids of chromosomes cross

Слайд 5Metaphase I
Tetrads line up on the equatorial plane.
Chromosomes attaches to

the spindle fiber extending from poles (centrioles)

Metaphase ITetrads line up on the equatorial plane.Chromosomes attaches to the spindle fiber extending from poles (centrioles)

Слайд 6Anaphase I
Homologous chromosomes separates to opposite poles

Anaphase IHomologous chromosomes separates to opposite poles

Слайд 7Telophase I
Movement of homologous chromosomes continues
Haploid set of chromosome

forms
Cytokinesis occurs simultaneously.

Telophase IMovement of homologous chromosomes continues Haploid set of chromosome formsCytokinesis occurs simultaneously.

Слайд 8Meiosis II
After meiosis I cells immediately begins second division, meiosis

II

Meiosis IIAfter meiosis I cells immediately begins second division, meiosis II

Слайд 9Prophase II
Same as prophase I

Prophase IISame as prophase I

Слайд 10Metaphase II
Chromosomes stay at the equator

Metaphase IIChromosomes stay at the equator

Слайд 11Anaphase II
Chromatids moves to poles (Chromosomes split into 2 part)

Anaphase IIChromatids moves to poles (Chromosomes split into 2 part)

Слайд 12Telophase II
Nucleus appears
Chromosomes starts uncoil (becomes invisible)
Cytokinesis begins (Dividing of

cytoplasm)

Telophase IINucleus appearsChromosomes starts uncoil (becomes invisible)Cytokinesis begins (Dividing of cytoplasm)

Слайд 13

Слайд 14

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