Which one of the following phenomena supports Darwin's concept of natural selection in organic evolution ?
- Development of transgenic animals
- Production of 'Dolly' the sheep by cloning
- Prevalence of pesticide resistant insects
- Development of organs from 'stern cells' for organ transplantation
The Correct Option is C
Solution and Explanation
Pesticide-resistant insects are an example of how species can adapt to environmental changes through natural selection. In this case, the insects that had genetic variations allowing them to survive exposure to pesticides were more likely to reproduce and pass on their resistant traits, leading to a higher prevalence of resistant individuals in the population over time. This is a classic example of how natural selection can lead to the evolution of traits that enhance an organism's survival and reproductive success in changing environments.
So, the correct option is (C): Prevalence of pesticide resistant insects
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Concepts Used:
Evidence for Evolution
Evolution evidence is one of the most important pillars of current biological theory. It is the only way to prove all of the proposed evolution theories. Fossils, comparative anatomy, and embryo development patterns are among the evidence used to support biological evolution.
Fossils are the non-degraded remains of living organisms discovered within rocks. The age of the fossil is determined by the layer in which it was recovered. In comparison to the fossils found in the upper layers, those found farther down are older. They provide insight on the condition of the specific region. Palaeontology is the scientific study of fossils.
Comparative Anatomy describes how many organisms share an origin and how natural selection or genetic drift led to the evolution of many diverse organisms. There were two categories of comparative anatomy found: homologous organs and analogous organs.
In Embryonic Development, until a certain stage of gestation, the embryos of various species have a similar structure. Human embryos, pig embryos, reptile embryos, and bird embryos, for instance, have similar embryonic development. As they grow older, they transform into the appropriate species. This demonstrates common ancestry once again.