Concept:Inbreeding is mating between closely related animals. It often leads to inbreeding depression.
This depression lowers growth, vigour, and general performance.
It also exposes harmful recessive traits in the offspring.
Explanation:Statement I says inbred animals reach market weight early. In reality, inbreeding reduces growth rate. So inbred animals take longer to reach market weight. This statement is false.
Statement II says inbred animals have reduced vigour. This is true because inbreeding depression weakens the animals. Reduced vigour means less stamina, poorer health, and lower productivity. So this statement is true.
Statement III says inbreeding increases the occurrence of undesirable traits. This is true because harmful recessive genes become more likely to pair up. These undesirable traits therefore appear more often in inbred offspring. So this statement is true.
The question asks for the false statement. Only statement I is false. Therefore, option A is correct.
Answer:A. I Only