minisatellite DNA
Quick Summary
Minisatellite DNA refers to repetitive sequences within an organism's DNA. These sequences, often consisting of 10 to over 100 base pairs, are repeated numerous times and can be clustered or dispersed throughout the genome. Unlike genes, minisatellites do not contribute to the functions of genes.12
Each individual possesses a unique pattern of these minisatellites, making them valuable for DNA fingerprinting. This technique, developed by Alec Jeffreys, uses these variable DNA sequences to identify individuals. While early methods involved restriction fragment length polymorphism (RFLP), current approaches often utilize polymerase chain reaction (PCR) and shorter repeat sequences called microsatellites.2
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DNA fingerprinting…highly variable DNA (known as minisatellites), which do not contribute to the functions of genes, are repeated within genes. Jeffreys recognized that each individual has a unique pattern of minisatellites (the only exceptions being multiple individuals from a single zygote, such as identical twins).
Read More…highly variable DNA (known as minisatellites), which do not contribute to the functions of genes, are repeated within genes. Jeffreys recognized that each individual has a unique pattern of minisatellites (the only exceptions being multiple individuals from a single zygote, such as identical twins).
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recombinant DNADiagnostics…In forensics, DNA fragments called variable number tandem repeats (VNTRs), which are highly variable between individuals, are employed to produce what is called a “DNA fingerprint.” A DNA fingerprint can be used to determine if blood or other body fluids left at the scene of a crime belongs to a…
Read More…In forensics, DNA fragments called variable number tandem repeats (VNTRs), which are highly variable between individuals, are employed to produce what is called a “DNA fingerprint.” A DNA fingerprint can be used to determine if blood or other body fluids left at the scene of a crime belongs to a…
Read More