Barred plumage in poultry, broodiness in poultry, rapid and slow feathering in poultry, cryptorchidism in horses, and white eye in Drosophila are examples of:
Options
Sex-linked inheritance ✓
Sex-influenced inheritance
Sex-limited inheritance
Holandric inheritance
Correct Answer: A
Explanation in English
Correct Answer: Sex-Linked Inheritance
From Table 6 in the notes: All these traits have genes located on sex chromosomes (X-linked), making them sex-linked traits.
Sex-Linked Traits Listed in the Notes
Barred plumage in poultry (X-linked)
Broodiness in poultry
Rapid feathering and slow feathering in poultry
Cryptorchidism in horse
White eye in Drosophila
Haemophilia and colour blindness in humans (X-linked)
Sex-Linked vs. Other Types (Table 6)
Sex-linked: Gene on sex chromosome; shows criss-cross inheritance pattern; inherited through both male and female (X-linked) or only through males (Y-linked)
Sex-influenced: Gene on autosome; different expression in males vs. females due to hormones (e.g., horn condition in polled/horned Dorset sheep)
Sex-limited: Gene on autosome; expressed in only one sex (e.g., milk production, semen production, egg production, baldness, 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.
