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Chapter 5A Biology Ed4

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