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13 terms

Cell Division (C9) A.Ryder

Mitosis and Meitosis
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meiosis
(genetics) cell division that produces reproductive cells in sexually reproducing organisms
mitosis
cell division in which the nucleus divides into nuclei containing the same number of chromosomes
chromosomes
threadlike structures made of DNA molecules that contain the genes
homologous chromosomes
Chromosomes with matching information
chromatin
the readily stainable substance of a cell nucleus consisting of DNA and RNA and various proteins
chromatids
two identical chromosomes that split and contain the same genetic material
sister chromatids
identical copies of a chromosome; full sets of these are created during the S(DNA replication) subphase of interphase
centromere
a specialized condensed region of each chromosome that appears during mitosis where the chromatids are held together to form an X shape
centrioles
two tiny structures located in the cytoplasm near the nuclear envelope
centrosomes
clouds of cytoplasmic material that in animal cells contain centrioles
genes
the biochemical units of heredity that make up the chromosomes; a segment of DNA capable of synthesizing a protein
diploid
(genetics) an organism or cell having two sets of chromosomes or twice the haploid number
haploid
(genetics) an organism or cell having only one complete set of chromosomes