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How are the diploid life cycle and the haploid life cycle related?
Essential Question: How has genetics played into allowing every organisms to survive as long as they have?
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Focus Question: How are the diploid life cycle and the haploid life cycle related?

Think:
Write a sentence using each one of the following terms: haploid, diploid, zygote
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The result is a diploid zygote
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In diploid life cycles, meiosis in germ cells of a multicellular diploid organism results in the formation
of haploid gametes
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A diploid germ cell goes through meiosis I
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The four resulting cells change in form and develop a tail to form four sperm
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A diploid germ cell begins to divide by meiosis
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One of the cells has nearly all of the cytoplasm
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Meiosis and Gamete Formation
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The polar body may divide again, but its offspring cells will not survive
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Because of its larger share of cytoplasm, the mature ovum has a large amount of nutrients
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Explain the below image below

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Haploid (Half) Life Cycle
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The haploid life cycle happens in most fungi and some protists
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The zygote, the only diploid structure, goes through meiosis immediately after it is formed and makes
new haploid cells
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In haploid life cycles, meiosis in a diploid zygote results in the formation of the first cell of a
multicellular haploid individual
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In plants, the multicellular diploid phase in the life cycle is called a sporophyte
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A spore forms a multicellular gametophyte
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The gametes fuse and give rise to the diploid phase
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In haploid life cycles, meiosis in a diploid zygote results in the formation of the first cell of a
multicellular haploid individual
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