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Science Vocabulary

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Across
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Atom with fewer or more neutrons than protons.
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Physical appearance for a trait, determined by a gene.
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The second stage of cell division where the nucleus divides in a four-part sequence.
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Theory explaining the relationship between cells and living things.
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The main part of chromosomes that carries genetic information of an organism.
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The study of how genes are turned off and on.
Down
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Microorganisms or viruses that cause disease.
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Molecule in the nucleus of a cell that is mostly made of DNA and has all parts of the genetic material.
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The process of a parent cell dividing into two identical daughter cells.
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A charged particle resulting from an imbalance of protons and electrons in an atom.
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A special type of cell division that produces reproductive cells.
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Protein molecules inside cells taht help chemical reactions happen faster.