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The Human Genome Project
| Term | Definition |
|---|---|
| karyotype | a picture of chromosomes arranged in pairs from longest to smallest |
| sex chromosomes | two of the 46 human chromosomes that determine an individual's sex |
| autosome | chromosome that is not a sex chromosome; 44 of the 46 human chromosomes |
| pedigree | chart that shows relationships within a family |
| sex-linked gene | a gene located on the X or Y chromosome |
| nondisjunction | error in meiosis where homologous chromosomes fail to separate |
| DNA fingerprinting | analysis of sections of DNA that have little or no known function, but vary widely from one individual to another, in order to identify individuals |
| The Human Genome Project | an ongoing effort to analyze the human DNA sequence |
| gene therapy | process of changing the gene that causes a genetic disorder; the absent or faulty gene is replaced by a normal, working gene |
| promoter | DNA sequences that are binding sites for RNA polymerase; indicate the start of a gene |
| open reading frame | sequence of DNA bases that occur shortly after the promoter and will produce a mRNA sequence |
| exons | the mRNA coding regions of genes |
| introns | noncoding regions that interupt exons |