Heterogametic Female in Animal Species
Which of the following females is heterogametic (produces two types of gametes with respect to sex chromosomes)?
- Buffalo
- Pig
- Poultry — Correct Answer
- Human
Explanation:
Correct Answer: Poultry
In poultry, the female is heterogametic (ZW), while the male is homogametic (ZZ).
Sex Chromosome Systems
| Species | Male | Female | Heterogametic Sex |
|---|---|---|---|
| Humans, Cattle, Pigs, Buffaloes (mammals) | 44 + XY | 44 + XX | Male |
| Poultry (birds) | 76 + ZZ | 76 + ZW | Female |
Implication: In poultry, sex-linked characters (e.g., barred plumage, feather growth rate) are inherited from the cock (ZZ) to all daughters — this is the basis of autosexing in poultry.
📚 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.
