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Cell with chromosomes inside the nucleus

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Presentation on theme: "Cell with chromosomes inside the nucleus"— Presentation transcript:

1 Cell with chromosomes inside the nucleus
Genes are found on the chromosomes. Genes are always in pairs. Each chromosome has many gene pairs. Cell with chromosomes inside the nucleus Chromosomes are made DNA A gene is a section of that DNA .

2 Purposes of Cell Division

3 Purposes of in Humans Cel l D i v s o n Growth & Repair Reproduction
fold Purposes of in Humans Cel l D i v s o n Growth & Repair Reproduction cut

4 Purpose: Cell division for reproduction creates offspring with traits from both mother and father.

5 Why it’s important: If offspring are created, the species continues
Why it’s important: If offspring are created, the species continues. If not, the species becomes extinct. makes Called: MEIOSIS

6 MOM DAD egg sperm offspring (reproduction) ½ chromosomes from Mom
½ chromosomes from Dad offspring (reproduction)

7 Purpose: Cell division for growth and repair creates exact copies of a cell.

8 Why it’s important: Makes it possible for a living thing to grow; creates new cells to replace damaged or dead cells. Called: MITOSIS

9 Chromosomes make copies
Skin Cell Chromosomes make copies Half go to each new cell Skin Cell Skin Cell (growth & repair) exact copies

10

11 Quick Quiz: Meiosis makes _____. The purpose of meiosis is ______________. Meiosis create egg and sperm cells with _____ the original chromosomes. Egg and sperm combine to create an __________ with unique traits. Mitosis can be compared to a ______________. Mitosis makes an exact ______ of the original cell. The purpose of mitosis is ________ and _______ of organisms.

12 Quick Quiz: Meiosis makes _____. The purpose of meiosis is ______________. Meiosis create egg and sperm cells with _____ the original chromosomes. Egg and sperm combine to create an __________ with unique traits. Mitosis can be compared to a ______________. Mitosis makes an exact ______ of the original cell. The purpose of mitosis is ________ and _______ of organisms. me reproduction half offspring copy machine copy growth repair


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