Mitosis/Meiosis How do your cells divide?. A few words before we start….. Haploid:n one set of...
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Transcript of Mitosis/Meiosis How do your cells divide?. A few words before we start….. Haploid:n one set of...
![Page 1: Mitosis/Meiosis How do your cells divide?. A few words before we start….. Haploid:n one set of chromosomes Diploid: 2n two sets of chromosomes.](https://reader036.fdocuments.us/reader036/viewer/2022070402/56649f275503460f94c3f08d/html5/thumbnails/1.jpg)
Mitosis/Meiosis
How do your cells divide?
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A few words before we start…..
• Haploid:n one set of chromosomes
• Diploid: 2n two sets of chromosomes
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Mitosis
• Body Cells divide to create new body cells
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Parent Cell
DNA condenses into chromosomes
Chromosomes align on the equator
Chromosomes separate
DNA uncoils
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It’s all about the chromosomes!
– There are 46 in human body cells– Before mitosis 46 chromosomes– After mitosis 46 chromosomes
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Which Cells Go Through Mitosis?
Growth
Repair
Work
Cells which help the body in:
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Mitosis Review 1. Is the beginning parent
cell diploid or haploid (2n or n)?
2. Are the daughter cells diploid or haploid (2n or n)?
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3. How many daughter cells are produced?
4. Are the resulting daughter cells different from the parent cell?
![Page 10: Mitosis/Meiosis How do your cells divide?. A few words before we start….. Haploid:n one set of chromosomes Diploid: 2n two sets of chromosomes.](https://reader036.fdocuments.us/reader036/viewer/2022070402/56649f275503460f94c3f08d/html5/thumbnails/10.jpg)
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5. Are the resulting daughter cells different from each other?
6. How many chromosomes are in a human parent cell?
7. How many chromosomes are in a human daughter cell?
![Page 11: Mitosis/Meiosis How do your cells divide?. A few words before we start….. Haploid:n one set of chromosomes Diploid: 2n two sets of chromosomes.](https://reader036.fdocuments.us/reader036/viewer/2022070402/56649f275503460f94c3f08d/html5/thumbnails/11.jpg)
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8.What types of cells are produced by mitosis?
9. Why (when) does a cell go through mitosis?
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Meiosis
Sexual Reproduction (two parents)
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Why Meiosis?• Meiosis - Production of
gametes
• Gametes- sex cells sperm and egg
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Meiosis Review
1. Is the beginning parent cell diploid or haploid (2n or n)?
2. Are the resulting daughter cells diploid or haploid (2n or n)?
![Page 16: Mitosis/Meiosis How do your cells divide?. A few words before we start….. Haploid:n one set of chromosomes Diploid: 2n two sets of chromosomes.](https://reader036.fdocuments.us/reader036/viewer/2022070402/56649f275503460f94c3f08d/html5/thumbnails/16.jpg)
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3. How many daughter cells are produced?
4.Are the resulting daughter cells different
from the parent cell?
![Page 17: Mitosis/Meiosis How do your cells divide?. A few words before we start….. Haploid:n one set of chromosomes Diploid: 2n two sets of chromosomes.](https://reader036.fdocuments.us/reader036/viewer/2022070402/56649f275503460f94c3f08d/html5/thumbnails/17.jpg)
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5. Are the resulting daughter cells different from each other?
7. How many chromosomes are in a human daughter cell?
6. How many chromosomes are in a human parent cell?
![Page 18: Mitosis/Meiosis How do your cells divide?. A few words before we start….. Haploid:n one set of chromosomes Diploid: 2n two sets of chromosomes.](https://reader036.fdocuments.us/reader036/viewer/2022070402/56649f275503460f94c3f08d/html5/thumbnails/18.jpg)
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8. What types of cells are produced by meiosis?
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Fertilization- egg and sperm combine to create a zygote
Zygote- fertilized egg
46
Mom
23
Dad
23
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This is how new organisms are made!!
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Let’s reviewMitosis & Meiosis
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Mitosis vs. Meiosis
Event Mitosis Meiosis
Produces 4 cells
Produces 2 cells
New cells identical
New cells different
New cells have the same number of chromosomes as parent
New cells have fewer chromosomes than parent
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Mitosis vs. Meiosis
Event Mitosis MeiosisBeginning cells diploid (2n)
Beginning cells haploid (n)
Ending cells diploid (2n)
Ending cells haploid (n)
Produces egg and sperm
Produces body cells
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Mitosis Animation