Inheritance Type for Production Traits
Semen production, milk production & egg production are the examples of-
- Sex-linked characters
- Sex-limited characters — Correct Answer
- Sex influenced characters
- None
Explanation:
Correct Answer: Sex-limited characters
Sex-limited traits are controlled by autosomal genes present in both sexes, but physically expressed in only one sex due to sex hormones or anatomical differences.
Sex-Limited vs Sex-Linked vs Sex-Influenced
| Index | Sex-limited | Sex-influenced | Sex-linked |
|---|---|---|---|
| Gene location | Autosome | Autosome | Sex chromosomes (X or Y; Z or W) |
| Expression | Only in one sex | Different in each sex (dominance changes) | Linked to sex; criss-cross/holandric inheritance |
| Examples | Semen production, milk production, egg production, secondary sexual characters | Polled/horned sheep, baldness in human | Barred plumage, broodiness, haemophilia, hypertrichosis |
| Responsible for | Sexual dimorphism | Hormonal dominance reversal | Criss-cross / Holandric inheritance |
📚 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.
