Topics:
Animal Refresher, Poultry Science
Broodiness and Plumage Traits Classification
Broodiness, feather growth & colour of plumage are:
- Sex-linked traits — Correct Answer
- Sex-influenced traits
- Sex-limited traits
- None of these
Explanation:
Correct Answer: Sex-linked traits
Broodiness, feather growth, and colour of plumage are sex-linked traits in poultry — they are controlled by genes located on the sex chromosomes (Z chromosome in birds).
Understanding Sex-Linked Traits in Poultry
- Sex-linked traits: Genes located on sex chromosomes (Z/W). Examples: barred plumage, slow/rapid feathering, broodiness.
- Sex-limited traits: Expressed in only one sex (e.g., egg production in females, milk production in cows).
- Sex-influenced traits: Expressed differently in each sex (e.g., horn growth in sheep — dominant in males, recessive in females).
In poultry, sex-linked feathering (slow vs. rapid feathering) is used in autosexing — sexing day-old chicks based on feather length without needing vent inspection.
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This multiple choice question is from Animal Refresher, Poultry Science. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from Animal Refresher to strengthen your preparation.
