The DNA within the chromosomes encodes genes, which are the basic units of heredity. Genes contain the information needed to produce proteins, the building blocks of life. During sexual reproduction, ...

Today, most scientists agree that genes correspond to one or more DNA sequences ... the inheritance of genetic traits could be linked directly to the movement of chromosomes.

The important thing to realize about linkage is that it helps researchers identify the locations on chromosomes ... which gene is responsible for a specific phenotype. In a genetic screen, mapping ...