Worksheet for life cyclesYou will need to know life cycles. They are an important and amazing mechanism for adaptation
and evolution of organisms. They represent the incredible diversity of strategies that exist for
organisms to reproduce sexually. They are an innovation of eukaryotes.
Answer/draw/write the following on a separate sheet of paper. Diagrams are the best way to learn
this!
I. Meiosis and Mitosis
Meiosis (I and II). DRAW IT
Mitosis. DRAW IT
What are the major differences between mitosis and meiosis?
What does Mitosis result in?
What does Meiosis result in?
What is required for Meiosis that is not required for mitosis?
Which is used for asexual reproduction?
Which is used for general repair and growth?
Which is used sexual reproduction?
What does haploid mean?
Diploid?
Polyploid?
What is a gamete?
A spore?
A zygote?
What is syngamy? Fertilization?
II. Life cycles
DRAW the generic sporic life cycle: Be sure and note where meiosis and mitosis occur, where
gametes are formed, and if/where spores are involved. Label n, 2n.
Now do it again for the gametic and the zygotic. What are the main differences?
**What is a spore and how does it differ from a gamete? This is a key question!
What is alternation of generations?
What is isomorphic alternation of generations?
What is heteromorphic alternation of generations?
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