Throughout the history of evolution, endless species have adopted various physiological and behavioral features to increase their survival rate and reproductive rate. For example, insects are thought to develop flying appendages like feathers to compete with other surrounding animals for potential spouses and to protect themselves from dangerous predators I will. According to the past fossil record about 400 million years ago, the ancestor of modern organisms called silver fish lived on the earth.
Insects fall into two broad categories: wingless insects such as mane and silver fish; winged insects such as crickets, crickets, crickets, earthworms, beetles, fly, butterflies, ants, bees, and many others I think the spider is an insect - it is not so. Spiders belong to a group of different animals called spiders. Spiders also include scorpions. About one million species of insects are known and more insects can be seen each year. However, as habitats are destroyed, many people are lost every year.
Sometimes, even closely related species with similar phenotypes evolve independently. For example, flight has evolved with bats and insects, and they all have wings that can adapt to flight. However, bats and insect feathers have evolved from completely different primitive structures. This phenomenon is known as convergent evolution, where similar traits evolve independently in species that do not have common ancestry recently. Convergent evolution represents an independent evolution of similar features in different lineage types. These two species have the same function, but they are flying, but they are separated from each other. They "fused" this useful function. Sharks and dolphins are similar in shape, but that is a long way. Sharks are fish and dolphins are mammals. This similarity is the result of exposing the two groups to the same selective pressure. In these two groups, changes that are useful for swimming are preferred.
Looking at the common structure, there is a big problem in determining evolutionary relationships based on comparative anatomy. It is a wing. The wings are present in various biomes. Birds, bats, and insects have feathers, but does this show how closely these three groups are closely related? It is quite possible that these three groups must have common winged ancestry. But if you truly want to tell you, you are wrong. That is a mistake. Bats and bird feathers come from ordinary, perhaps wingless, ancestral forelimbs. Both have a skeletal structure similar to the ancestral forelimb and the current quadruped or quadruped wings. These features from traits found in common ancestors are called homologous traits. Structurally, however, bats and bird feathers have little in common with insect feathers.