where is The location of a gene on a particular chromosome
The CFTR gene is located on the long arm of chromosome 7 at position 7q31.2. Geneticists use maps to describe the location of a particular gene on a chromosome. One type of map uses the cytogenetic location to describe a geneâs position.The cytogenetic location is based on a distinctive pattern of bands created when chromosomes are stained with certain chemicals.he chromosome on which the gene can be found. The first number or letter used to describe a geneâs location represents the chromosome. Chromosomes 1 through 22 (the autosomes) are designated by their chromosome number.
Scientists are studying the purpose of the rest of the 99% of the DNA. The diagram below shows the structure of a chromosome. In the diagram below you can see that a gene is a sequence of DNA that codes for a protein. Therefore, the gene is made of DNA. The diagram below shows that genes are located at specific places on the chromosomes called loci (singular: locus).