Genes close together on the same chromosome tend to be inherited together instead of assorting independently.
Genes on the same chromosome tend to move together, producing more parental combinations than recombinants. The closer the genes, the less chance of crossing over between them. Morgan's fruit fly experiments showed this in 1910.
Recombination frequency measures distance, allowing maps.
Genes close together on the same chromosome tend to be inherited together instead of assorting independently.
Linked Genes is one of the 54 topics in Genetics. It is rated Intermediate, so it suits learners who already know the core vocabulary. Related topics in this area include Inherited Disorders, Sex-Linked Inheritance, Crossing Over.
Eye colour and wing shape genes in Drosophila deviate from 9:3:3:1.
Work through the Beginner topics in Genetics first, such as Heredity, Gene, Allele, then return to Linked Genes. Intermediate topics assume the Beginner vocabulary.
The closest topics to Linked Genes are Inherited Disorders, Sex-Linked Inheritance, Crossing Over, X-Chromosome Inactivation. 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 Linked Genes. To practise the whole of Genetics, use the Genetics quiz.
Linked Genes: Genes close together on the same chromosome tend to be inherited together instead of assorting independently. Inherited Disorders: Conditions caused by faulty genes passed through families, such as cystic fibrosis and sickle cell disease. 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 Inherited Disorders and explain the difference aloud. Finally, take the Genetics quiz and come back to this page for any question you miss.
Conditions caused by faulty genes passed through families, such as cystic fibrosis and sickle cell disease.
🧬 GeneticsGenes on the X chromosome show different patterns in males and females, as with red-green colour blindness.
🧬 GeneticsExchange of segments between homologous chromosomes in prophase I that creates new allele combinations.
🧬 GeneticsOne X chromosome in each female cell is silenced as a Barr body to equalise gene dosage.
🧬 Genetics