Chromosome Numbers of Various Animals
Match the column:
| TABLE-I (Animal) | TABLE-II (Chromosome No.) |
|---|---|
| 1. Cat | (a) 78 |
| 2. Horse | (b) 38 |
| 3. Mule | (c) 64 |
| 4. Camel | (d) 63 |
| 5. Poultry | (e) 74 |
- 1-b, 2-c, 3-d, 4-e, 5-a — Correct Answer
- 1-b, 2-c, 3-e, 4-d, 5-a
- 1-a, 2-c, 3-d, 4-e, 5-b
- 1-b, 2-d, 3-c, 4-e, 5-a
Explanation:
Correct Answer: 1-b, 2-c, 3-d, 4-e, 5-a
Chromosome numbers (2N) of various animals as per Table 2 of the notes:
- Cat (Felis domesticus) → 2N = 38. Note: Pig (Sus domesticus) also has 38 chromosomes.
- Horse (Equus caballus) → 2N = 64. Donkey (Equus asinus) has 62 chromosomes.
- Mule → 2N = 63. A mule is the hybrid of male donkey (62) × female horse (64), so it gets (62+64)/2 = 63 chromosomes. Mules are sterile due to odd chromosome number.
- Camel → 2N = 74. Both single-humped (Camelus dromedarius) and double-humped (Camelus bactrianus) camels have 74 chromosomes. Double-humped camels are mainly found in Ladakh region of J&K.
- Poultry/Chicken (Gallus domesticus) → 2N = 78. Note: Dog (Canis familiaris) also has 78 chromosomes.
Why Other Options Are Wrong
- Option B swaps Camel (74) with Mule (63).
- Option C swaps Cat (38) with Poultry (78).
- Option D swaps Horse (64) with Mule (63).
📚 About this Topic — Animal Refresher
This multiple choice question is from Animal Refresher, Livestock Production and Management. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from Animal Refresher to strengthen your preparation.
