Examples of Sex-Linked Inheritance in Animals
Barred plumage in poultry, broodiness in poultry, rapid feathering and slow feathering in poultry, cryptorchidism in horses and white eye in Drosophila are examples of:
- Sex-linked inheritance — Correct Answer
- Sex-influenced inheritance
- Sex-limited inheritance
- Autosomal inheritance
Explanation:
Correct Answer: Sex-linked inheritance
All the listed traits (barred plumage, broodiness, rapid/slow feathering, cryptorchidism in horse, white eye in Drosophila) are examples of sex-linked inheritance — their genes are located on sex chromosomes (X or Z chromosome).
Comparison of Sex-Related Trait Types
| Type | Gene Location | Examples |
|---|---|---|
| Sex-linked | Sex chromosomes (X or Z) | Barred plumage, broodiness, feather growth rate, hemophilia, colour blindness in human; Hypertrichosis (Y-linked) |
| Sex-influenced | Autosomes | Baldness in human, polled/horned condition in Dorset sheep |
| Sex-limited | Autosomes | Milk production, egg production, semen production, secondary sexual characters |
📚 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.
