Natural Selection
In any environment, the individuals that have the best adaptive features are the ones most likely to survive and reproduce
This results in natural selection:
Individuals in a species show a range of variation caused by differences in genes
When organisms reproduce, they produce more offspring than the environment is able to support
This leads to competition for food and other resources which results in a ‘struggle for survival’
Individuals with characteristics most suited to the environment have a higher chance of survival and more chances to reproduce
Therefore the alleles resulting in these characteristics are passed to their offspring at a higher rate than those with characteristics less suited to survival
This means that in the next generation, there will be a greater number of individuals with the better adapted variations in characteristics
This theory of natural selection was put forward by Charles Darwin and became known as ‘survival of the fittest’
What is the difference between natural selection and artificial selection?
How is natural selection related to genetics?
What is survival of the fittest?
Migration may increase or decrease the effects of selection.explain.
Explain the terms. race, breed, cultivars,variety.