3 What lines of evidence do we have that evolution has taken

3. What lines of evidence do we have that evolution has taken place? 4. Explain the process of natural selection. 5. Explain each of Darwin\'s postulates sing the Medium Ground Finch from the Galapagos Islands as an example.

Solution

1.Fossil evidence
Similarities among living organisms -Homology

2. Phenotypic variation within a species
Example - Some Polar bear are white and some are brown.

Difference in reproduction and survival

Example - Brown bear can\'t able to get enough food in white background ice coverd area like antartic region but white polar bear can able to get more food for survival and reproduction.

Transfer of genes through Heredity
Example - White polar bear can able to produce more offspring of white bears.

The offspring survival rate increase
Example - The white polar bear offspring can able to survie easily compare to brown offspprong. After certain period only white bear common in population.

3. All the varieties of Darwin Finches evolved from the same island. The original seed eating features many other forms with altered beak. Based on the insectivorous and vegetarian the finches started to evolved in that geographical area commonly called adaptive radiation.