Question

How would you describe Darwin's theory of common descent? What is some evidence that supports it?

Answer 1

Charles Darwin provided the concept of 'survival of the fittest' in nature. Homo sapiens Neanderthals are termed as the extinct species or subspecies of humans. It is observed that they lived in Eurasia 40,000 years ago.

Complete answer:
On the basis of observations that were formed during a sea voyage around the world, Charles Darwin formulated a theory of evolution and named it 'theory of natural selection'.

The main summary of the theory is:
1.There was provided a gradual and evident evolution of life forms.
2.Any population possesses some built-in variations in its characteristics. Those characteristics which allow some of the organisms to survive better in natural conditions (climate, food, physical factors, etc.) would outbreed other characteristics that are less advantageous to lives under such natural conditions.
3.Darwin referred 'fitness' ultimately and only to reproductive fitness.

Hence, those who are better and fit in an environment, give rise to more progeny than others. These, therefore, will survive for a much time and hence are selected by nature.

Let's try to understand the theory with the help of an evidence:
An interesting observation supporting evolution by natural selection originated from England. In the 1850s, preceding industrialization, more white-winged moths were present than dark-winged moths. After industrialization that is around 1920, the population of melanised moths increased. An explanation for this was provided that light winged moths can be easily observed by predators against the dark background caused due to pollution and smoke.

Note: The Neanderthal man always buried their people after death. To cover and protect their body these men utilizes animal hides. Animal hide is used as animal skin for human use. These men observed a high rate of traumatic injury. Z