give an example of connective link.
• what is divergent evolution? give example!
• state and explain Hardy Weinberg's principles.
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Speciation is a result of divergent evolution and occurs when one species diverges into multiple descendant species. Darwin's finches are an example of this. Convergent evolution occurs when species have different ancestral origins but have developed similar features
Divergent evolution occurs when two different species share a common ancestor but have different characteristics from one another. This is probably the type of evolution that first comes to mind when the topic of evolution comes up. After all, evolutionary theory teaches us that every form of life on Earth today developed from the first living cells! Over time, the original cells took vastly different paths of development and ultimately created the diversity of life on Earth—from trees to humans. Each time one ancestral species diverges into multiple descendant species it is called speciation. Speciation is an important result of divergent evolution.
Of course, divergent evolution doesn't have to take place on such a grand scale. It can also be as simple as different populations of an organism that have adapted to different environments. Darwin's finches are a good example of this. Darwin's finches are a group of about 15 different species of finches that live on the Galapagos Islands. Each separate species of finch adapted to a different diet, causing variation in their beak shape and/or size. All of them evolved from one species of finch that was a common ancestor.
The Hardy–Weinberg principle, also known as the Hardy–Weinberg equilibrium, model, theorem, or law, states that allele and genotype frequencies in a population will remain constant from generation to generation in the absence of other evolutionary influences.
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