Term for Y-Linked Characters Inherited Only Through Males
Genes of Testis-determining factor (TDF) and hypertrichosis are present on the Y-chromosome. Inheritance of these characters is only through the male. Such characters are known as:
- Hologenic character
- Diandric character
- Holandric character — Correct Answer
- Diagenic character
Explanation:
Correct Answer: Holandric character
Holandric characters are Y-linked traits that pass from father → son → grandson. They are inherited exclusively through males.
Types of Sex-Linked Inheritance Patterns
| Type | Pattern | Classification |
|---|---|---|
| Holandric | Father → Son → Grandson | Non-criss-cross (same sex) |
| Hologenic | Mother → Daughter → Granddaughter | Non-criss-cross (same sex) |
| Diagenic | Father → Daughter → Grandson | Criss-cross (opposite sex) |
| Diandric | Mother → Son → Granddaughter | Criss-cross (opposite sex) |
Holandric examples: Hypertrichosis (excess hair on ear pinna), TDF (Testis-determining factor).
📚 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.
