1. Tardigrade
  2. Question
  3. Biology
  4. When a species gets separated geographically, it evolves separately? Which of the following conditions would determine whether they are now different species? I. They fail to interbreed. II. They failed to give fertile offspring. III. They have different coloured body. IV. They appear morphologically slightly different. Choose the correct combination from given options.

Q. When a species gets separated geographically, it evolves separately? Which of the following conditions would determine whether they are now different species?
I. They fail to interbreed.
II. They failed to give fertile offspring.
III. They have different coloured body.
IV. They appear morphologically slightly different.
Choose the correct combination from given options.

 107  155 Evolution Report Error

Solution:

Statement I and II are correct conditions to determine that two species are different. This can be explained as Species are a group of interbreeding individuals producing fertile offsprings. If two individuals fails to follow this criteria they belongs to different species.
But members of a species can have different body colour and appear morphologically slightly different. Therefore, these criterias do not justify that two individuals are of different species.