Evolution is a gradual change in the inherited traits of a population over many generations. Natural selection is a mechanism where the members of a population best suited to their …

Darwin Darwin’s theory, known as natural selection, believed that organisms possessed variation (each individual was slightly different from one another), and these variations led to some …

The theory of Evolution by Natural Selection was first proposed by Darwin in 1859. Evolution is the observation that species change over time, for example the beak of birds getting larger or …

Explain how the trunk of an elephant evolved using Darwin's theory of natural selection, and then Lamarck's theory. According to Darwin's theory, genetic variation within the population means …

How does natural selection lead to evolution? Evolution describes the divergence of species by natural selection. It is best to think of this at the level of the gene pool. The gene pool is all the …

Why was Charles Darwin's theory of evolution by natural selection not accepted at the time? There are three main reasons for this, firstly, the 1800s when Charles Darwin lived was a …

First off we need to understand what natural selection is. Natural selection is the mechanism proposed by Charles Darwin in his theory of evolution.The key points...

Explain how natural selection can lead to new species forming (speciation) Within a gene pool of a population, there is genetic variation, due to mutation. This leads to phenotypic variation.

Explain Darwins theory of evolution by natural selection (5 marks) A mutation will randomly occur in individuals within a species, providing a larger variation in genes. This mutated gene may …

What are the requirements for natural selection? Evolution by natural selection needs three conditions to be satisfied: variation, heredity, and competition (also called differential fitness). …