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Biology Chapter 8
Biology Chapter 8 Section 1
Term | Definition |
---|---|
autosome | any chromosome that is not a sex chromosome |
chromatid | one of the 2 strands of a chromosome that become visible during meiosis or mitosis |
centromere | the region of chromosome that holds the two sister chromatids together during mitosis |
chromatin | a portion of the cell nucleus made up of DNA and proteins; it is the carrier of the genes in inheritance |
in a eukaryotic cell, one of the structures in the nucleus that are made up of DNA and protein; in a prokaryotic cell, the main ring of DNA | |
diploid | a cell that contains two haploid sets of chromosomes |
haploid | describes a cell, nucleus, or organism that has only one set of unpaired chromosomes |
histone | a type of protein molecule found in the chromosomes of eukaryotic cells but not prokaryotic cells |
homogenous chromosome | chromosomes that have the same sequence of genes, that have the same structure and that pair during meiosis |
sex chromosome | one of the pair of chromosomes that determine the sex of an individual |