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The Diplontic Life Cycle

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In a diplontic life cycle, the multicellular organism is diploid throughout its life, and meiosis produces haploid gametes that are the only haploid cells present.

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A human's body cells stay diploid throughout life; only sperm and egg cells are ever haploid.

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The organism itself never becomes haploid in this cycle — only its gametes do, briefly, until fertilization restores the diploid state.