The idea of an offspring showing differences from their parents deals with the concept of descent with modification through natural selection. The concept of evolution through natural selection was first conceived by Charles Darwin and is used to explain how and why populations of species change over time (Laboratory Exercise 4 2015). Darwin’s theory was based on three conditions that are necessary and sufficient for natural selection. There must be variation in a trait in a population, the trait must be heritable, and there must those who survive with the trait and those who do not survive without the trait (Laboratory Exercise 4 2015). This means that the individuals with the most fitness survive and create the next generation with the same
