What is natural selection, and how is it related to changes in allele frequency?

Natural selection describes the selective pressure favouring those species with certain phenotypes (characteristics) which make them better suited to the environment than other species. Those with favourable characteristics are more likely to survive and reproduce, thus passing on the favourable alleles to their offspring. This results in the allele frequency of the favourable allele in the population increasing. The allele frequency of other, less favourable alleles, decreases as those without the favourable allele will find it more difficult to survive and breed, thus they will create fewer offspring.

VU
Answered by Vishal U. Biology tutor

2714 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

Explain how an action potential is generated


Describe the polymerase chain reaction


The genetic code is described as being degenerate. What does this mean? and why ?


In what ways have human activities contributed to global warming?


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