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Chapter 8
Chromosomes
| Term | Definition |
|---|---|
| Chromosomes | rod-shaped structures made of DNA and proteins |
| Histone | Help maintain the shape of the chromosome and aid in the tight packing of DNA |
| Chromatid | Each half of the chromosome |
| Centromere | The point at which the two chromatids are attached |
| Chromatin | The less tightly coiled DNA- protein complex |
| Sex Chromosome | chromosomes that determine the sec of an organism and carry genes |
| Autosome | All other chromosomes in an organism, there are 44 |
| Homologous Chromosome | The two copies of each autosome; or homologues |
| Karyotype | an array of the chromosomes found in an individual’s cells at metaphase of mitosis and arranged in homologous pairs and in order of diminishing size |
| Diploid | Cells with two sets of chromosomes |
| Haploid | Cells which contain only one set of chromosomes; sperm and egg cells |