Two snails belong to the same species. Yellow shelled snails found in grassland areas, dark shelled ones in woodland. Shell colour determined by genes. Explain how natural selection could have caused this distribution of snails

The yellow banded shell provides camouflage to the snail in grassland areas. These are more difficult for the birds to see, so less are eaten by predation. As a consequence, more yellow banded snails survive and go on to reproduce. The gene for the yellow banded shell will be passed on to the offspring.

LB
Answered by Leah B. Biology tutor

4161 Views

See similar Biology GCSE tutors

Related Biology GCSE answers

All answers ▸

Pathogens are disease-causing organisms which can infect humans. Bacteria and viruses are two examples of pathogens. Explain the differences between bacteria and pathogens and give an example of each.


How do I answer a long answer question so that I get all of the marks?


What are the differences and similarities between osmosis, active transport and diffusion?


Explain the difference between Type 1 and Type 2 diabetes?


We're here to help

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

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences