Give an example of characteristics being used to determine how close two species are in evolutionary,terms.

Explanation

a. Studies of fossils indicate that some ancient reptiles like dinosaurs had evolved feathers to provide insulation in cold weather. However, they cannot fly with these feathers. Later on birds adapted the feathers to flight. This means that birds are very dosely related to reptiles, since dinosaurs were reptile.
b. Let us take another example of humans and apes. Both of them have similar body design. Body hair and mammary glands are present in both the animals. Hence, these two animals are closely related in evolutionary terms