Suggest how the two sub-species have developed from a single ancestral population.

Two populations become separated by a barrier such as sea (geographical separation). As a result populations cannot interbreed, hence gene flow between two populations is prevented. As a consequence, only a small number of species are breeding (the founder effect) leading to a limited variety of allels. Gene mutations take place; there are different environmental conditions and selection pressures leading to changes in the allele frequency. This leads to physical and physiological changes and hence allopatric (geographic) speciation.

MS
Answered by Maja S. Biology tutor

2634 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

Outline the process of oxidative phosphorylation and its specificity to aerobic respirpation.


Describe how the structure of glycogen allows it to perform its function and explain the advantages to animals of using glycogen as an energy store.


Formation of an enzyme-substrate complex increases the rate of reaction, explain how.


In the process of mitosis, which stages occur? Describe each stage.


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences