Search Results for: natural selection
Natural selection
Natural Selection Definition What is natural selection in biology? Natural selection is defined as a process in nature... Read More
Examples of Natural Selection
Reviewed by: Mary Anne Clark, Ph.D. Darwin's Finches Darwin's finches are an excellent example of the way in... Read More
Darwin and Natural Selection
Reviewed by: Mary Anne Clark, Ph.D. In the 19th century, a man called Charles Darwin, a biologist from England,... Read More
A Look Into Natural Selection and its Mechanisms
Charles Darwin is credited with outlining the fundamentals of evolution. He was a smart and eager pupil and protégé,... Read More
Neutral mutation
Neutral Mutation Definition What is a neutral mutation? Neutral mutations are the alterations in the DNA that are... Read More
Survival of the fittest
When we talk about evolutionary processes, the usage of the phrase "Survival of the fittest" has been very common in... Read More
Genetic diversity
Genetic Diversity Definition Each species is composed of individuals with their own set of genes. A gene is the inheritance... Read More
Allopatric speciation
We can define speciation as a process by which the novel genetically independent group of organisms are formed through the... Read More
Genetic drift
Genetic Drift Definition What is genetic drift in simple terms? The simple definition of genetic drift ( also referred to... Read More
On Mate Selection Evolution: Are intelligent males more attractive?
A study published in Science on January 11 seems to be the first to lay empirical evidence that concur with Charles Darwin's... Read More
Genetics – Lesson Outline & Worksheets
Topics Modules Quizzes/Worksheets Description Introduction to Genetics Genetics - Definition:... Read More
Adaptive Radiation
Reviewed by: Mary Anne Clark, Ph.D. When Charles Darwin was in the Galapagos Islands, one of the first things he... Read More
The Gene Pool and Population Genetics
Reviewed by: Mary Anne Clark, Ph.D. The previous tutorial is about adaptive radiation. Adaptive radiation is... Read More
Sympatric speciation
Speciation is a process of evolution through which two different existing populations evolve and a distinct species form. It... Read More
Polymorphism
Polymorphism Definition The occurrence of two or more different forms or morphs in the population of a species is referred... Read More
Selective Breeding
Reviewed by: Mary Anne Clark, PhD Thousands of years before Darwin proposed evolution by natural selection and... Read More
Adaptive evolution
Definition noun A kind of evolution that involves evolutionary changes that are adaptive to a particular... Read More
Population Growth and Survivorship
By: Maria Victoria Gonzaga Previously, we learned about biodiversity and endemism. Now, let's look at the... Read More
Pleiotropy
Pleiotropy Definition When one single gene starts affecting multiple traits of living organisms, this phenomenon is known... Read More
Genetics and Evolution
Tutorials in Genetics and Evolution immerse on the molecular aspects and the works of nature that led to what every living... Read More
The Evolutionary Development of Multicellular Organisms
The beginning of the Cambrian era saw a widespread arrival of multi-cellular organisms, particularly in the form of sponges.... Read More
Sexual reproduction
Sexual reproduction is a mode of reproduction involving the fusion of haploid female gamete (egg cell) and haploid male... Read More
Ecological niche
An ecological niche refers to the interrelationship of a species with all the biotic and abiotic factors affecting it. This... Read More
Physiological adaptation
If we look over evolutionary history, we find that it’s neither the most genius and intelligent nor the strongest and the... Read More
Primary succession
Primary Succession Definition Primary succession is an ecological succession where a newly formed area is inhabited for the... Read More
Sexual selection
sexual selection A form of natural selection in which, according to Darwin's theory, the male or female is attracted by... Read More
Divergent evolution
Divergent Evolution Definition Divergent evolution refers to the process by which interbreeding species diverged into two... Read More
Adaptation
Adaptation Definition In biology and ecology, adaptation refers to the process of adjusting in behavior, physiology, or... Read More