Properties of Multiple Allelism
Which of the following statement is true about multiple allelism -
- More than two alternative form of a gene located on the same locus of the homologous chromosome is known as multiple alleles.
- Multiple alleles are produced by mutation.
- Multiple alleles are found in the population, not in the single individual.
- All are true — Correct Answer
Explanation:
Correct Answer: All are true
All three statements correctly describe multiple allelism.
Key Features of Multiple Allelism
- Definition: More than two alternative forms of a gene at the same locus on homologous chromosomes.
- Origin: Multiple alleles arise through successive mutations at the same locus.
- Population vs Individual: Found in the population — a single diploid individual can only carry a maximum of 2 of the multiple alleles.
- No. of possible genotypes = N(N+1)/2, where N = number of alleles.
Examples of Multiple Allelism
| Organism | Trait | Number of Alleles |
|---|---|---|
| Human | ABO blood group | 3 (Iᴬ, Iᴮ, Iᴼ) → 6 genotypes |
| Rabbit | Coat colour | 4 alleles |
| Drosophila | Eye colour | 15 alleles |
📚 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.
