Cellular Reproduction - Weebly

[Pages:16]Cellular Reproduction

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SB1B Cellular Reproduction

SB1. Obtain, evaluate, and communicate information to analyze the nature of the relationships between structures and functions in living cells.

B. Develop and use models to explain the role of cellular reproduction (including binary fission, mitosis, and meiosis) in maintaining genetic continuity.

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Students will know they have succeeded when:

I can describe the process of asexual reproduction. I can identify how sexual reproduction results in unique combinations of DNA in each offspring. I can describe why DNA replication is an essential part of cellular reproduction. I can describe the stages of the cell cycle, and why are they each important to the growth of organisms. I can describe the function of the type of cells that undergo the process of mitosis?

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Learning Objectives

1. What is the process of asexual reproduction? 2. Why does sexual reproduction result in unique

combinations of DNA in each offspring? 3. Why is DNA replication an essential part of cellular

reproduction? 4. What are the stages of the cell cycle, and why are they

each important to the growth of organisms? 5. What is the function of the type of cells that undergo the

process of mitosis?

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What will students do?

Develop a model: to construct a simulated copy of an object or system.

What should students know?

? Binary fission: asexual reproduction; one cell divides to form two identical cells.

? Meiosis: single diploid cell divides into four haploid gametes.

? Mitosis: single diploid cell divides into two identical diploid cells.

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Key Concepts

? Traits of organisms are a result of two factors: ? Genetic material present in previous generations ? Type of reproduction (sexual or asexual).

? In asexual reproduction, prokaryotic cells divide by binary fission, producing uniform offspring.

? Eukaryotic cells reproduce through the cell cycle. The cell cycle involves growth, synthesis, and repair.

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PROKARYOTIC CELL CYCLE

? Binary Fission: prokaryotic cells replicate genomes and divide into two equal parts.

? Some prokaryotic populations can increase from a single cell to billions of cells in a matter of hours.

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