Life Stages DNA Directs Cellular Changes
Life Stages Objectives
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Compare and contrast mitosis and meiosis, including the role of DNA replication, where these processes occur in an organism, and why the processes are significant.
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Outline the life cycles of various species, indicating when mitosis and meiosis occur.
Cells have to replicate themselves: a fertilized egg has to become many cells, damaged cells have to be replaced, and sperm and egg have to be produced to form the next generation of life.
The processes of mitosis and meiosis are involved in the production of new cells.
This provides a detailed look at both mitosis and meiosis, comparing and contrasting these processes.
A different model is used to compare mitosis and meiosis.
Can you describe what mitosis and meiosis have in common and also how they differ?
This small brittlestar is re-growing lost legs. Is this an example of mitosis or meiosis?
Stages of a Life Cycle
Mitosis and meiosis occur at different stages in an organism’s development.
This video is a microscopic look at the eggs and sperm produced by meiosis.
In the next section, we’re heading to wetlands to learn about amphibians and their complex life stages.
Check your knowledge. Can you:
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compare and contrast mitosis and meiosis, including the role of DNA replication, where these processes occur in an organism, and why the processes are significant?
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outline the life cycles of various species, indicating when mitosis and meiosis occur?
Go back to the Chromosomes & DNA Page
Go forward to the Amphibians Page
Life Cycles Lecture Guide Contents
The material from this guide and corresponding lecture is assessed on the weekly quiz.
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Module 6
This Guide
Life Cycles
