Mitosis and Meiosis
Mitosis
Meiosis
Mitosis
Meiosis
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Understanding Mitosis and Meiosis: Differences in Human Cell Division, Slides of Cell Biology
An overview of mitosis and meiosis, two types of cell division essential for human growth and reproduction. Learn about the differences between these processes, including the number of chromosomes in daughter cells and the production of gametes.
What you will learn
- What are gametes and when do humans use meiosis?
- What are somatic cells and when do humans use mitosis?
- What are the two types of cell division shown in the model and which one produces gametes?
- How many chromosomes do humans get from each parent?
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2021/2022
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Mitosis and Meiosis
Mitosis Meiosis
Mitosis Meiosis
Meiosis and Mitosis
Information The nucleus located inside the cells of your body contains chromosomes, and each chromosome carries many genes. Genes contain coded hereditary information that determine your traits like hair color, height and everything else you see when you look in a mirror. We get these chromosomes from our parents, but first our parents have to make gametes (sex cells) so they can make you. These gametes are made through a process called Meiosis. Meiosis is one of two types of cell division. The other type is called mitosis and in this packet you will look at the difference.
Critical Analysis Questions
- What are the two types of cell division shown in the model (Figure 1)? Circle them above.
Name ________________________________________________
Name
Humans!!
Mitosis and Meiosis
Humans have a total of 46 chromosomes that we get from our parents through sexual reproduction. Each parent gives us 23 chromosomes meaning that we each end up with 23 pairs of chromosomes. So do we use mitosis? Or Meiosis?
The answer is we actually use BOTH! Crazy! You see, humans have two different groups of cells. First there are Somatic Cells. Somatic cells make up your body. Your hair, skin, bones, muscles, eyes and even your brain are made of somatic cells. These cells reproduce using mitosis so that each daughter cell is an exact clone. This makes sense when you think about it because when you heal a wound or grow you have to make sure the new cells have all 46 chromosomes.
Then there are the sex cells also called Gametes. Gametes are the cells responsible for reproduction and creating new humans to continue the species. Gametes are produced through meiosis which means each gamete has only 23 chromosomes. This makes sense also. This way when two gametes fuse together to make a new child you will have 46 chromosomes.
- How many chromosomes do humans have from their parent’s total?
a. How many do we get from our mom? __________________
b. How many do we get from our dad? __________________
- Define… a. Somatic Cells
b. Gametes
- When do humans use mitosis? WHY??
- When do humans use meiosis? WHY??