Meiosis A type of cell division that results
![Meiosis • A type of cell division that results in gametes(sperm and egg) being Meiosis • A type of cell division that results in gametes(sperm and egg) being](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-1.jpg)
![Purpose of Meiosis • genetic continuity • Genetic variability Purpose of Meiosis • genetic continuity • Genetic variability](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-2.jpg)
![Where does meiosis occur? • It occurs in the gonads( testes and Ovaries) Where does meiosis occur? • It occurs in the gonads( testes and Ovaries)](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-3.jpg)
![Two Types of Meiosis • Oogenesis • spermatogenesis Two Types of Meiosis • Oogenesis • spermatogenesis](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-4.jpg)
![Meiosis Meiosis](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-5.jpg)
![Meiosis Haploid cells Diploid cells Somatic cells Gametes Role of Meiosis To produce haploid Meiosis Haploid cells Diploid cells Somatic cells Gametes Role of Meiosis To produce haploid](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-6.jpg)
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![Meiosis • Interphase • S phase—replication • Cell is now diploid with all chromosomes Meiosis • Interphase • S phase—replication • Cell is now diploid with all chromosomes](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-8.jpg)
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![The stages of meiosis • Meiosis 1 • Meiosis 2 • • • Four The stages of meiosis • Meiosis 1 • Meiosis 2 • • • Four](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-10.jpg)
![Stages of meiosis 1 • Meiosis one is called the reduction division • The Stages of meiosis 1 • Meiosis one is called the reduction division • The](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-11.jpg)
![Prophase 1 • During prophase 1 of meiosis, homologous chromosomes(similar chromosomes) line up next Prophase 1 • During prophase 1 of meiosis, homologous chromosomes(similar chromosomes) line up next](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-12.jpg)
![Prophase 1 Prophase 1](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-13.jpg)
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![Metaphase 1 • During this phase homologous chromosomes line up at the middle of Metaphase 1 • During this phase homologous chromosomes line up at the middle of](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-18.jpg)
![Metaphase 1 Metaphase 1](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-19.jpg)
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![Anaphase 1 • Spindle fibers pull homologous chromosomes to separate ends of the cell Anaphase 1 • Spindle fibers pull homologous chromosomes to separate ends of the cell](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-21.jpg)
![Anaphase 1 Anaphase 1](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-22.jpg)
![Telophase 1 • Nuclear membrane reappears around each set of separated chromosomes • Spindle Telophase 1 • Nuclear membrane reappears around each set of separated chromosomes • Spindle](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-23.jpg)
![Telophase 1 Telophase 1](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-24.jpg)
![Meiosis II • Almost the same as Mitosis. • 2 cells are formed from Meiosis II • Almost the same as Mitosis. • 2 cells are formed from](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-25.jpg)
![Stages of Meiosis II • Stages of meiosis 2 are identical to the stages Stages of Meiosis II • Stages of meiosis 2 are identical to the stages](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-26.jpg)
![Prophase II • Nuclear membrane disappears • Spindle fibers form • Chromosomes become visible Prophase II • Nuclear membrane disappears • Spindle fibers form • Chromosomes become visible](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-27.jpg)
![Prophase II Prophase II](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-28.jpg)
![Metaphase II • Chromosomes line up at the middle of the cell. • Spindle Metaphase II • Chromosomes line up at the middle of the cell. • Spindle](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-29.jpg)
![Metaphase II Metaphase II](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-30.jpg)
![Anaphase II • Spindle pulls one chromatid from each chromosome to opposite ends of Anaphase II • Spindle pulls one chromatid from each chromosome to opposite ends of](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-31.jpg)
![Anaphase II Anaphase II](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-32.jpg)
![Telophase II • Nuclear membrane reappears around each group of chromatids (now called SS Telophase II • Nuclear membrane reappears around each group of chromatids (now called SS](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-33.jpg)
![Telophase Telophase](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-34.jpg)
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![Gametogenesis • In males: • spermatogenesis • 1 diploid germ cell goes through meiosis Gametogenesis • In males: • spermatogenesis • 1 diploid germ cell goes through meiosis](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-39.jpg)
![Oogenesis • This is the meiosis that occurs in the ovaries of females • Oogenesis • This is the meiosis that occurs in the ovaries of females •](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-40.jpg)
![Explanation of Oogensis • Within the ovaries of females, a diploid 2 n cell Explanation of Oogensis • Within the ovaries of females, a diploid 2 n cell](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-41.jpg)
![• During the second metiotic division the cells divide again creating 4 cells, • During the second metiotic division the cells divide again creating 4 cells,](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-42.jpg)
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![Spermatogensis • This is meiosis that occurs in the testes of males • Results Spermatogensis • This is meiosis that occurs in the testes of males • Results](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-44.jpg)
![Explanation of Spermatogenesis • Within the testicles of a male, a spermatogonium replicates its Explanation of Spermatogenesis • Within the testicles of a male, a spermatogonium replicates its](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-45.jpg)
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![Definitions • • • Diploid Haploid/ monoploid Tetrad Synapsis Crossing Over Nondisjunction Reduction Division Definitions • • • Diploid Haploid/ monoploid Tetrad Synapsis Crossing Over Nondisjunction Reduction Division](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-47.jpg)
![End Result of Meiosis • 4 new cells are created • Each cell has End Result of Meiosis • 4 new cells are created • Each cell has](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-48.jpg)
![Meiosis / Mitosis Compared Event Where does it occur? Mitosis Meiosis Somatic cells Gonads Meiosis / Mitosis Compared Event Where does it occur? Mitosis Meiosis Somatic cells Gonads](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-49.jpg)
- Slides: 49
![Meiosis A type of cell division that results in gametessperm and egg being Meiosis • A type of cell division that results in gametes(sperm and egg) being](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-1.jpg)
Meiosis • A type of cell division that results in gametes(sperm and egg) being created with half the number of chromosomes(haploid-n) as the parent.
![Purpose of Meiosis genetic continuity Genetic variability Purpose of Meiosis • genetic continuity • Genetic variability](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-2.jpg)
Purpose of Meiosis • genetic continuity • Genetic variability
![Where does meiosis occur It occurs in the gonads testes and Ovaries Where does meiosis occur? • It occurs in the gonads( testes and Ovaries)](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-3.jpg)
Where does meiosis occur? • It occurs in the gonads( testes and Ovaries)
![Two Types of Meiosis Oogenesis spermatogenesis Two Types of Meiosis • Oogenesis • spermatogenesis](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-4.jpg)
Two Types of Meiosis • Oogenesis • spermatogenesis
![Meiosis Meiosis](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-5.jpg)
Meiosis
![Meiosis Haploid cells Diploid cells Somatic cells Gametes Role of Meiosis To produce haploid Meiosis Haploid cells Diploid cells Somatic cells Gametes Role of Meiosis To produce haploid](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-6.jpg)
Meiosis Haploid cells Diploid cells Somatic cells Gametes Role of Meiosis To produce haploid gametes from diploid germ cells. Occurs only in the gonads • Plays an important role in creating genetic variability through the processes of: • Segregation • Independent assortment • Crossing over
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![Meiosis Interphase S phasereplication Cell is now diploid with all chromosomes Meiosis • Interphase • S phase—replication • Cell is now diploid with all chromosomes](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-8.jpg)
Meiosis • Interphase • S phase—replication • Cell is now diploid with all chromosomes being mitotic • Meiosis I—reductive division • Creates 2 haploid cells with mitotic chromsomes • Consists of several stages • Prophase I—Like prophase in mitosis. • Synapsis—homologous chromosomes attach to form tetrads. • Crossing over occurs. • Reshuffling of genes. Genetic recombination. Important for creating variability.
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![The stages of meiosis Meiosis 1 Meiosis 2 Four The stages of meiosis • Meiosis 1 • Meiosis 2 • • • Four](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-10.jpg)
The stages of meiosis • Meiosis 1 • Meiosis 2 • • • Four stages Prophase 1 Metaphase 1 Anaphase 1 Telophase 1 Four stages Prophase 2 Metaphase 2 Anaphase 2 Telophase 2
![Stages of meiosis 1 Meiosis one is called the reduction division The Stages of meiosis 1 • Meiosis one is called the reduction division • The](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-11.jpg)
Stages of meiosis 1 • Meiosis one is called the reduction division • The process of reducing the number of chromosomes in a cell by half (1/2). In other words, going from diploid (2 n) to haploid(n) • Ex. 46 chromosomes to 23 chromosomes
![Prophase 1 During prophase 1 of meiosis homologous chromosomessimilar chromosomes line up next Prophase 1 • During prophase 1 of meiosis, homologous chromosomes(similar chromosomes) line up next](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-12.jpg)
Prophase 1 • During prophase 1 of meiosis, homologous chromosomes(similar chromosomes) line up next to each other as pairs • Pairs of homologous chromosomes are called Tetrads. • Crossing over of non-sister chromatids occurs. • Crossing over : the overlapping of non-sister chromatids resulting in an exchange of genes.
![Prophase 1 Prophase 1](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-13.jpg)
Prophase 1
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![Metaphase 1 During this phase homologous chromosomes line up at the middle of Metaphase 1 • During this phase homologous chromosomes line up at the middle of](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-18.jpg)
Metaphase 1 • During this phase homologous chromosomes line up at the middle of the cell. • tetrads are aligned in such a way that the homologous chromosomes are situated across from each other • The spindle from one end of the cell attaches to one pair of sister chromatids while a spindle fiber from the other end attaches to the other pair of sister chromatids. • Independent Assortment—maternal and paternal chromosomes are line up on the opposite sides of the metaphase plate in a random fashion. When these homologues split during anaphase I. The new nuclei consist of a mixture of maternal and paternal
![Metaphase 1 Metaphase 1](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-19.jpg)
Metaphase 1
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![Anaphase 1 Spindle fibers pull homologous chromosomes to separate ends of the cell Anaphase 1 • Spindle fibers pull homologous chromosomes to separate ends of the cell](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-21.jpg)
Anaphase 1 • Spindle fibers pull homologous chromosomes to separate ends of the cell
![Anaphase 1 Anaphase 1](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-22.jpg)
Anaphase 1
![Telophase 1 Nuclear membrane reappears around each set of separated chromosomes Spindle Telophase 1 • Nuclear membrane reappears around each set of separated chromosomes • Spindle](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-23.jpg)
Telophase 1 • Nuclear membrane reappears around each set of separated chromosomes • Spindle disappears • Cytokinesis (division of the cytoplasm) occurs • Two new cells are created with ½ (haploid) the chromosomes number of the original cell • 46 DS chromosomes – 23 DS chromosomes per cell or 96 chromatids- 46 chromatids per cell
![Telophase 1 Telophase 1](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-24.jpg)
Telophase 1
![Meiosis II Almost the same as Mitosis 2 cells are formed from Meiosis II • Almost the same as Mitosis. • 2 cells are formed from](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-25.jpg)
Meiosis II • Almost the same as Mitosis. • 2 cells are formed from each of the cells from Meiosis I. • These cells are haploid and have chromosomes formed by only one chromatid. • These cells develop into gametes • • • Prophase II Metaphase II Anaphase II Telophase II Cytokinesis Results in 4 haploid cells that will eventually form gametes
![Stages of Meiosis II Stages of meiosis 2 are identical to the stages Stages of Meiosis II • Stages of meiosis 2 are identical to the stages](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-26.jpg)
Stages of Meiosis II • Stages of meiosis 2 are identical to the stages of Mitosis • Prophase II • Metaphase. II • Anaphase II • Telophase II
![Prophase II Nuclear membrane disappears Spindle fibers form Chromosomes become visible Prophase II • Nuclear membrane disappears • Spindle fibers form • Chromosomes become visible](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-27.jpg)
Prophase II • Nuclear membrane disappears • Spindle fibers form • Chromosomes become visible
![Prophase II Prophase II](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-28.jpg)
Prophase II
![Metaphase II Chromosomes line up at the middle of the cell Spindle Metaphase II • Chromosomes line up at the middle of the cell. • Spindle](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-29.jpg)
Metaphase II • Chromosomes line up at the middle of the cell. • Spindle attaches to centromere of each chromosome
![Metaphase II Metaphase II](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-30.jpg)
Metaphase II
![Anaphase II Spindle pulls one chromatid from each chromosome to opposite ends of Anaphase II • Spindle pulls one chromatid from each chromosome to opposite ends of](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-31.jpg)
Anaphase II • Spindle pulls one chromatid from each chromosome to opposite ends of cell
![Anaphase II Anaphase II](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-32.jpg)
Anaphase II
![Telophase II Nuclear membrane reappears around each group of chromatids now called SS Telophase II • Nuclear membrane reappears around each group of chromatids (now called SS](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-33.jpg)
Telophase II • Nuclear membrane reappears around each group of chromatids (now called SS chromosomes) • Spindle disappears • Cytokinesis occurs • two new cells are created each having the haploid number of chromosomes
![Telophase Telophase](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-34.jpg)
Telophase
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![Gametogenesis In males spermatogenesis 1 diploid germ cell goes through meiosis Gametogenesis • In males: • spermatogenesis • 1 diploid germ cell goes through meiosis](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-39.jpg)
Gametogenesis • In males: • spermatogenesis • 1 diploid germ cell goes through meiosis to form 4 haploid cells. These develop in the testes to form sperm. • In females: • Oogenesis • 1 diploid germ cell split unequally into 4 haploid cells. • The large cell develops into an egg. • The small cells are know as polar bodies and usually die. • Why does this unequal division occur?
![Oogenesis This is the meiosis that occurs in the ovaries of females Oogenesis • This is the meiosis that occurs in the ovaries of females •](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-40.jpg)
Oogenesis • This is the meiosis that occurs in the ovaries of females • Resulr in the creation of An egg with ½ the normal number of chromosomes
![Explanation of Oogensis Within the ovaries of females a diploid 2 n cell Explanation of Oogensis • Within the ovaries of females, a diploid 2 n cell](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-41.jpg)
Explanation of Oogensis • Within the ovaries of females, a diploid 2 n cell called an oogonium undergoes meiosis • Before meiosis begins the oogonium replicates(doubles) its chromosomes so that it has 46 DS chromosomes or 92 sister chromatids • During the first meiotic division the Homologous (similar chromosomes are separated. During this stage cytokinesis occurs unevenly and as a result one large and one samll cell are created. The large cell is called the primary Oocyte and the small one is a polar body. • Each of these chromosomes will have 23 chromosomes or 46 SS chromatids
![During the second metiotic division the cells divide again creating 4 cells • During the second metiotic division the cells divide again creating 4 cells,](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-42.jpg)
• During the second metiotic division the cells divide again creating 4 cells, but this time the new cells created have 23 SS chromosomes, Again cytokinesis has resulted in an unequal distribution of the cytoplasm • Note: The three polar bodies will die because they do not have enough cytoplasm to keep them running
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![Spermatogensis This is meiosis that occurs in the testes of males Results Spermatogensis • This is meiosis that occurs in the testes of males • Results](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-44.jpg)
Spermatogensis • This is meiosis that occurs in the testes of males • Results in the creation of 4 sperm each with ½(haploid) the number of chromosomes as the original cell
![Explanation of Spermatogenesis Within the testicles of a male a spermatogonium replicates its Explanation of Spermatogenesis • Within the testicles of a male, a spermatogonium replicates its](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-45.jpg)
Explanation of Spermatogenesis • Within the testicles of a male, a spermatogonium replicates its chromosomes to contain 46 Ds chromosomes or 92 chromatids. • During the first meiotic division, the cell divides and the homologous chromosomes separate. This results in 2 new cells each with 23 DS chromosomes or 46 chromatids each • During the second division two new cells are created, each with 23 SS chromosomes. These cells are called Primary spermatids will mature into sperm • Each spermatid matures into sperm in the Epididymis
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![Definitions Diploid Haploid monoploid Tetrad Synapsis Crossing Over Nondisjunction Reduction Division Definitions • • • Diploid Haploid/ monoploid Tetrad Synapsis Crossing Over Nondisjunction Reduction Division](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-47.jpg)
Definitions • • • Diploid Haploid/ monoploid Tetrad Synapsis Crossing Over Nondisjunction Reduction Division Spermatids Primary body Oognium
![End Result of Meiosis 4 new cells are created Each cell has End Result of Meiosis • 4 new cells are created • Each cell has](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-48.jpg)
End Result of Meiosis • 4 new cells are created • Each cell has ½ or haploid (n) the number of chromosomes as the parent /original cell • Crossing over has resulted in a new combination of genes on chromosomes leading to variety in orgasnisms
![Meiosis Mitosis Compared Event Where does it occur Mitosis Meiosis Somatic cells Gonads Meiosis / Mitosis Compared Event Where does it occur? Mitosis Meiosis Somatic cells Gonads](https://slidetodoc.com/presentation_image/32e0e71d97f1a6d1ea5760b0cdb82fb5/image-49.jpg)
Meiosis / Mitosis Compared Event Where does it occur? Mitosis Meiosis Somatic cells Gonads Number of cells created per complete cycle. 2 4 Number of divisions 1 2 Number of Chromosomes per new cell created Same as parent ½ parent cell Does crossing over occur? No Yes possibly Do homologous chromosomes line up? No Yes Genetic continuity, growth Genetic variability Purpose
Block xoang nhĩ độ 2
Mitosis and meiosis
Two cells are produced
Cell cycle and cell division
Cell cycle and cell division
Cell division phases
Duplicated chromosomes
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Meiosis i vs meiosis ii
Chromosomes number is maintained mitosis or meiosis
Crossing over occurs during
Chromosome disability
Concept mapping chapter 10 meiosis 1 and meiosis 2
Meiosis introduction activity
Metaphase 1
Why is meiosis referred to as reductional division
Process of reduction division
Why is meiosis referred to as reductional division
Why is meiosis referred to as reductional division
Why is meiosis referred to as reductional division
Meiosis division
Diagram a cell with four chromosomes going through meiosis.
Can you fill in the meiosis concept map
Importance of meiosis
Diagram that shows the process of mitosis and meiosis
Long division and short division
Synthetic division examples with answers
Long division and short division
Polynomial synthetic division
Metaphase 1 vs metaphase 2
M phase
Frequency of cell division
Why is cell division important
Plant cell division
Ipmatc acronym ideas
Telophase
When cell division does not occur in the usual pattern a(n)
Section 8-2 cell division
Mitosis sexual reproduction
Cell furrow method
Cleavage furrow in cell division
Cell continuity leaving cert