The statement is true. DNA markers, also known as genetic markers, are specific regions of DNA that show variations or polymorphisms among individuals. These variations can be in the form of single nucleotide changes (SNPs), insertions or deletions of DNA segments, or repeated DNA sequences. DNA markers are used in genetic mapping to track the inheritance of specific traits or diseases in families or populations. They provide valuable information for understanding the genetic basis of various traits and diseases. To confirm this answer, you can refer to scientific literature or textbooks on genetics that discuss the use of DNA markers in genetic mapping.
