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Multiple Choice
Which of the following markers is not useful for mapping genes?
A
Restriction fragment length polymorphisms
B
Microsatellites
C
Single Nucleotide Polymorphisms
D
Enhancers
Verified step by step guidance
1
Understand the concept of genetic markers: Genetic markers are specific sequences in the genome that can be used to identify individuals or species and are useful in mapping genes.
Learn about Restriction Fragment Length Polymorphisms (RFLPs): RFLPs are variations in DNA sequences that can be identified by the presence of fragments of different lengths after digestion with specific restriction enzymes. They are used as markers in genetic mapping.
Explore Microsatellites: Microsatellites are repeating sequences of 1-6 base pairs of DNA. They are highly polymorphic and serve as excellent markers for genetic mapping due to their variability among individuals.
Understand Single Nucleotide Polymorphisms (SNPs): SNPs are the most common type of genetic variation among people. They represent a single base pair change in the DNA sequence and are widely used in genetic mapping.
Clarify the role of Enhancers: Enhancers are regulatory DNA sequences that increase the transcription of associated genes. They are not used as markers for mapping genes because they do not provide the polymorphic information needed for mapping.