Examples of Specific Inheritance Pattern
Barred plumage in poultry, broodiness in poultry, rapid feathering & 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
- None
Explanation:
Correct Answer: Sex-linked inheritance
All listed traits (barred plumage, broodiness, rapid/slow feathering, cryptorchidism in horses, white eye in Drosophila) have their governing genes located on the sex chromosomes (X or Z), making them examples of sex-linked inheritance.
Three Types of Inheritance — Comparison
| Type | Gene Location | Expression | Examples |
|---|---|---|---|
| Sex-linked | Sex chromosomes (X or Z) | In both sexes but differently | Barred plumage, broodiness, feather growth (rapid/slow), cryptorchidism; Haemophilia, Colour-blindness (X-linked); Hypertrichosis, TDF (Y-linked) |
| Sex-influenced | Autosomes | Different dominance in each sex | Polled & horned Dorset sheep, baldness in human |
| Sex-limited | Autosomes | Only in one sex | 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.
