Mutation theory couldn’t explain _______a)variationsb)saltationc...
One of the drawbacks of mutation theory was that it couldn’t explain the development of mimicry, the relationship between the position of nectars in flower and also length of proboscis in their insect pollinators. The problem was that these cannot be imagined to have developed all of a sudden.
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Mutation theory couldn’t explain _______a)variationsb)saltationc...
Development of Mimicry
Mutation theory, which proposes that variations arise from random mutations, could not explain the development of mimicry in organisms. Mimicry is a complex adaptation where one species evolves to resemble another species for survival purposes.
Reasons why mutation theory couldn't explain mimicry:
1. Complexity: Mimicry involves intricate adaptations and specific traits that cannot be easily attributed to random mutations. The development of mimicry often requires multiple genetic changes that need to occur simultaneously, which is unlikely to happen through random mutations alone.
2. Functional Advantage: Mimicry provides a strong selective advantage to the species that exhibit it. These advantageous traits would not persist in a population if they were solely the result of random mutations.
3. Consistency: Mimicry can be remarkably consistent across different populations of the same species, indicating a level of genetic control that goes beyond the scope of random mutations.
4. Convergent Evolution: Mimicry is also seen in unrelated species that face similar selective pressures, leading to similar adaptations. This phenomenon, known as convergent evolution, suggests that mimicry is not solely driven by random mutations but by a more complex mechanism of adaptation.
In conclusion, the development of mimicry in organisms cannot be fully explained by mutation theory alone due to the complexity, functional advantage, consistency, and convergent evolution observed in mimicking species.