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Chapter 5A Biology Ed4

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Across
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Chromosomes line up on the equatorial plane
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Haploid cells
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Nuclear envelope reforms and spindles disappear
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Nuclear envelope disappears, spindles form, DNA organizes
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Discovered mitosis in 1882
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Cell growth and DNA replication occur here
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Pairs of paired chromosomes; seen in meiosis 1
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A section of DNA that produces a particular trait
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Formation of sperm
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A structure that builds spindles
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Cells which have homologous pairs of chromosomes; abbreviated 2n
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Area around the nucleus in a cell
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Division of the cytoplasm
Down
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Half of a paired chromosome
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The study of heredity
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Cells with only one set of chromosomes; abbreviated n
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Doubled diploid chromosome count; abbreviated 4n
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The constricted area of a chromosome
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Sister chromatids are pulled to opposite poles
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The equal division of genetic material
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Formation of an ovum
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Union of two gametes
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These characteristics make a person unique
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When DNA coils around these proteins, the DNA is said to be "organized"
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Creating haploid cells from diploid cells