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A mule, produced by cross breeding, is superior to a horse in strength and disease resistance but has which limitation?
AIt is short-lived
BIt cannot work hard
CIt is highly disease-prone
DIt is sterile
Answer & Solution
Correct answer: D. It is sterile
1. A mule results from outbreeding and shows hybrid vigour.
2. The text states it surpasses the horse in strength, intelligence, working ability and disease resistance.
3. However, it is explicitly noted to be sterile, so option C contradicts the text and D is correct.
4. Hence the answer is D.
_Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit "Breeding and Biotechnology", p.298_
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