Uses recombination frequencies between genes to build maps measured in centimorgans.
Recombination frequency between two loci of 1 percent equals 1 centimorgan (about 1 million base pairs in humans on average). Three-point crosses give gene order. Sturtevant created the first map in 1913 using Drosophila.
Modern maps use SNPs and sequencing.
Uses recombination frequencies between genes to build maps measured in centimorgans.
Genetic Linkage Mapping is one of the 54 topics in Genetics. It is rated Advanced, so it suits learners who want specialist depth. Related topics in this area include Gene, Quantitative Trait Loci, Genetic Drift.
Linkage analysis in families located the cystic fibrosis gene before it was cloned.
Work through the Beginner topics in Genetics first, such as Heredity, Gene, Allele, then return to Genetic Linkage Mapping. Advanced topics assume the Intermediate vocabulary.
The closest topics to Genetic Linkage Mapping are Gene, Quantitative Trait Loci, Genetic Drift, Linked Genes. Comparing them side by side is a good way to see how the ideas connect.
Read the summary and the in-depth section, then use the quick check on the interactive lesson for Genetic Linkage Mapping. To practise the whole of Genetics, use the Genetics quiz.
Genetic Linkage Mapping: Uses recombination frequencies between genes to build maps measured in centimorgans. Gene: A segment of DNA that carries the instructions for making a particular protein or RNA. Read both side by side and note what each one explains.
First, read the summary and write the definition in your own words. Second, read the in-depth section and note any example. Third, compare it with Gene and explain the difference aloud. Finally, take the Genetics quiz and come back to this page for any question you miss.
A segment of DNA that carries the instructions for making a particular protein or RNA.
🧬 GeneticsRegions of the genome statistically associated with variation in continuous traits.
🧬 GeneticsRandom changes in allele frequency that have strong effects in small populations, including the founder effect and bottleneck.
🧬 GeneticsGenes close together on the same chromosome tend to be inherited together instead of assorting independently.
🧬 Genetics