Biology - Evolution Question with Solution | TestHub
BiologyEvolutionMechanism of EvolutionMedium2 minPYQ_2026
BiologyMediumsingle choice
In mules, meiosis fails to occur. It indicates ________ type of isolating mechanism.
Options:
Answer:
A
Solution:
Mules are the hybrid offspring of a male donkey and a female horse. They are viable but sterile because they cannot produce functional gametes due to the failure of homologous chromosomes to pair properly during meiosis.
This inability to produce viable gametes is a classic example of a post-zygotic isolating mechanism known as hybrid sterility.
Answer: Hybrid sterility
Stream:MHT_CET_MEDICALSubject:BiologyTopic:EvolutionSubtopic:Mechanism of Evolution
⏱ 2mℹ️ Source: PYQ_2026
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