What is a genetic marker?

What is a genetic marker?

• A. A type of natural selection
• B. A metabolic pathway related to genetics
• C. A gene or DNA sequence with a known location on a chromosome
• D. A structure involved in protein folding

Answer: (C)

A genetic marker refers specifically to a gene or DNA sequence that has a known location on a chromosome. These markers can be used in various genetic studies, including mapping genes related to diseases, tracking inheritance patterns in families, and conducting population genetics research. Genetic markers can vary in type; they can be single nucleotide polymorphisms (SNPs), short tandem repeats (STRs), or even entire genes. Their precise localization on chromosomes makes them invaluable tools in genetics for identifying specific traits, understanding genetic diversity, and assisting in breeding programs or medical diagnostics.

A genetic marker refers specifically to a gene or DNA sequence that has a known location on a chromosome. These markers can be used in various genetic studies, including mapping genes related to diseases, tracking inheritance patterns in families, and conducting population genetics research. Genetic markers can vary in type; they can be single nucleotide polymorphisms (SNPs), short tandem repeats (STRs), or even entire genes. Their precise localization on chromosomes makes them invaluable tools in genetics for identifying specific traits, understanding genetic diversity, and assisting in breeding programs or medical diagnostics.