Originally there was only one species of finch (bird) in the Galapagos Islands. However there are now 14 different species of finch in the Galapagos Islands. Suggest an explanation for the development of the 14 different species.

The populations of finches became separated geographically (on different islands). Then genetic variation developed in these isolated communities. Natural selection acted differently in these isolated communities and the environment on each different island meant that certain traits were more favourable in each community. Eventually interbreeding between the different communities became impossible as their genes were too different. This made them distinct species as they could no longer breed and produce fertile offspring. 

FN
Answered by Francesca N. Biology tutor

3362 Views

See similar Biology GCSE tutors

Related Biology GCSE answers

All answers ▸

Describe three ways in which the body maintains its temperature in different climates


Describe how the body responds when a decrease in core body temperature is detected. (6 marks)


What are the main similarities and differences between DNA and RNA?


Name two components of an animal cell, and briefly describe their role.


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning