Polymorphic tandem repeats that are only two to five nucleotide pairs long and are extremely valuable in the creation of high density maps of eukaryotic chromosomes are known as:
A) RFLP
B) EST
C) Microsatellites
D) Macrosatellites
E) FISH

Question

Quizplus · Accepted Answer

Polymorphic tandem repeats that are two to five nucleotide pairs long are microsatellites. They are highly variable and can be used as genetic markers for mapping eukaryotic chromosomes. RFLP (A) is a technique that detects variation in DNA fragments that have been cut with restriction enzymes. EST (B) stands for expressed sequence tag, a short DNA sequence that represents a gene transcript. Macrosatellites (D) are longer tandem repeats, typically greater than 50 base pairs in length. FISH (E) stands for fluorescence in situ hybridization, a technique for visualizing and mapping DNA sequences on chromosomes. None of these options correctly define the described tandem repeats.

Polymorphic Tandem Repeats That Are Only Two to Five Nucleotide