Term for Two Genes on the Same Chromosome
Two genes of two different traits located on the same chromosome are said to be:
- Epistatic
- Pleiotropic
- Linked — Correct Answer
- Codominant
Explanation:
Correct Answer: Linked
When two genes of two different traits are located on the same chromosome, they are said to be linked. Linked genes tend to be inherited together and do not assort independently — this is the exception to Mendel's Second Law (Law of Independent Assortment).
Key Facts about Linkage
- Linkage is the exception to Mendel's Second Law of Independent Assortment.
- Complete linkage: Recombination frequency = 0 (e.g., male Drosophila, female silk moth, female poultry, sex chromosomes of all heterogametic species).
- Incomplete linkage: Recombination frequency between 0 and 0.5.
- Linkage is a transient (temporary) cause of genetic correlation between traits.
📚 About this Topic — Animal Genetics & Breeding
This multiple choice question is from Animal Genetics & Breeding, Animal Refresher. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from Animal Genetics & Breeding to strengthen your preparation.
