DNA MARKER Meaning and
Definition
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A DNA marker refers to a specific region of DNA sequence that exhibits variations among individuals or populations. It is a section of DNA that is easily recognized and can be used to identify and distinguish one individual or group from another. DNA markers are used extensively in various fields of research such as genetics, forensics, and evolutionary biology.
DNA markers can be classified into two types: polymorphic and non-polymorphic markers. Polymorphic DNA markers are those that exhibit multiple forms or alleles in a population, thereby providing information about genetic variation and diversity. Examples of polymorphic DNA markers include microsatellites, single nucleotide polymorphisms (SNPs), and minisatellites. On the other hand, non-polymorphic DNA markers refer to regions that display minimal or no variation among individuals. These markers are often used for forensic purposes, as they can provide reliable individual identification.
By analyzing the presence or absence, length, or nucleotide variations of DNA markers, scientists can make inferences about the relationships between individuals, populations, or species. DNA markers play a crucial role in understanding the genetic basis of various traits, disease susceptibility, paternity testing, and tracing ancestral lineages. They are commonly used to construct genetic maps, identify genetic disorders, determine the origin and migration patterns of species, and facilitate identification of criminals or unidentified individuals in forensic investigations.
In conclusion, DNA markers are specific sections of DNA that exhibit variations in sequences and are used to identify individuals or groups. They have diverse applications in research, forensics, and other genetic studies, contributing significantly to our understanding of the biological world.
Common Misspellings for DNA MARKER
- sna marker
- xna marker
- cna marker
- fna marker
- rna marker
- ena marker
- dba marker
- dma marker
- dja marker
- dha marker
- dnz marker
- dns marker
- dnw marker
- dnq marker
- dna narker
- dna karker
- dna jarker
- dna mzrker
- dna msrker
- dna mwrker
Etymology of DNA MARKER
The term "DNA marker" is composed of two parts: "DNA" and "marker".
1. DNA: The acronym "DNA" stands for "Deoxyribonucleic Acid". The term was coined by Swiss biochemist Friedrich Miescher in 1869 when he discovered the substance in the nuclei of cells. The word "deoxyribo" refers to the sugar found in the backbone of DNA, while "nucleic acid" indicates its classification as a type of acid. The word "acid" was used due to the presence of phosphate groups in the molecule, which are chemically acidic.
2. Marker: The term "marker" has a different etymology. It originates from the Latin word "marcaria", meaning "boundary" or "limit".
