178 results found

Search Results for: selection

Natural selection

Natural Selection Definition What is natural selection in biology? Natural selection is defined as a process in nature... 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

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

Model Selection and Multi-Model Inference

 Model Selection and Multi-Model Inference      ... Read More

Disruptive Selection

Sometimes called Diversifying selection. This type of selection favors both the extremes at the expense of the average. An... Read More

Selection coefficient

selection coefficient The proportion of progeny or potential progeny not surviving to sexual maturity; usually defined... 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

Evolution

Reviewed by: Mary Anne Clark, PhD Evolution Definition Evolution (evo‧lu‧tion, ˈɛvəluːʃ(ə)n) is... Read More

Artificial Selection

'''artificial selection More commonly known as selective Breeding, where professionals study the genotype and phenotype of... Read More

Directional Selection

The process of natural selection involving the genome for a species directionally choosing certain genes to remain prominent... 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

The Basile J. Luyet memorial collection in cryobiology: A selection of books and manuscripts

The Basile J. Luyet memorial collection in cryobiology: A selection of books and manuscripts    ... 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

Selection

selection (Science: biology) Placing organisms under conditions where the growth of those with a particular genotype will be... Read More

Evolutionary Analysis, Third Edition

Evolutionary Analysis, Third Edition      ... Read More

Genetics – Lesson Outline & Worksheets

  Topics Modules Quizzes/Worksheets Description Introduction to Genetics Genetics - Definition:... 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

Sexual reproduction

Sexual reproduction is a mode of reproduction involving the fusion of haploid female gamete (egg cell) and haploid male... Read More

Function

Definition noun, plural: functions (biology) The special, normal, proper physiologic activity of a body part or an... Read More

Adaptive evolution

Definition noun A kind of evolution that involves evolutionary changes that are adaptive to a particular... Read More

Pleiotropy

Pleiotropy Definition When one single gene starts affecting multiple traits of living organisms, this phenomenon is known... 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

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

Genetic drift

Genetic Drift Definition What is genetic drift in simple terms? The simple definition of genetic drift ( also referred to... Read More

Cloning

Definition noun The process of creating an exact copy of a biological unit (e.g. a DNA sequence, cell, or organism) from... Read More

Foundations of Biogeography: Classic Papers with Commentaries

Foundations of Biogeography: Classic Papers with Commentaries     ... Read More

Divergent evolution

Divergent evolution definition Divergent evolution refers to the process by which interbreeding species diverged into two... Read More

Fecundity

Fecundity Definition The meaning of fecundity is the reproductive rate (fecundity rate) or the performance of an individual... Read More

Sexual

sexual Of or pertaining to sex, or the sexes; distinguishing sex; peculiar to the distinction and office of male or female;... Read More

Primary succession

Primary succession definition Primary succession is an ecological succession where a newly formed area is colonized for the... Read More

Biology

Biology Definition Biology is the branch of science that primarily deals with the structure, function, growth, evolution,... 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

Isoenzyme

Isozymes (also known as isoenzymes) are enzymes that differ in amino acid sequence but catalyze the same chemical reaction.... Read More

The Reluctant Mr. Darwin: An Intimate Portrait of Charles Darwin and the Making of His Theory of Evolution (Great Discoveries)

The Reluctant Mr. Darwin: An Intimate Portrait of Charles Darwin and the Making of His Theory of Evolution ... 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

Kin Selection

Altruistic behaviour, an example being the protection of offspring, where the parent has the instinctive belief that... Read More