What is gradual divergence?

Evolution occurs when heritable characteristics of a species change. Populations of a species can gradually diverge into separate species by evolution. Continuous variation across the geographical range of related populations matches the concept of gradual divergence.

What is gradual divergent evolution?

The type of evolution where species gradually become increasingly different from its ancestors is called divergent evolution. It differs from convergent evolution in a way that unrelated groups of species evolve analogous structures in spite of their evolutionary ancestors being very distant or unrelated.

What is adaptive divergence in evolution?

Adaptive divergence describes the emergence of new forms from a shared common ancestor by adaptation to different environmental conditions. As such, it is key to the formation of new species by means of natural selection1,2.

What is the best description of gradual divergence?

What is the best description of ‘gradual divergence’? a. Continuous variation in features seen in closely related populations across a geographical range.

Is Melanism an industrial?

Industrial melanism, the darkness—of the skin, feathers, or fur—acquired by a population of animals living in an industrial region where the environment is soot-darkened.

How is divergent evolution different from convergent evolution?

Whereas convergent evolution involves unrelated species that develop similar characteristics over time, divergent evolution involves species with a common ancestor that change to become increasingly different over time.

How does divergence or divergent evolution occur?

Divergent evolution occurs when a group from a specific population develops into a new species. In order to adapt to various environmental conditions, the two groups develop into distinct species due to differences in the demands driven by the environmental circumstances.

What is directional directional selection?

In population genetics, directional selection, or positive selection is a mode of natural selection in which an extreme phenotype is favored over other phenotypes, causing the allele frequency to shift over time in the direction of that phenotype.

Can humans have melanism?

In humans. Melanism, meaning a mutation that results in completely dark skin, does not exist in humans. Melanin is the primary determinant of the degree of skin pigmentation and protects the body from harmful ultraviolet radiation.

Is industrial melanism an example?

Industrial Melanism is a typical case of natural selection. It involves protective and adaptive coloration. A best example of this is shown by the peppered moth. These moths usually rest on the bark of the trees.