Dictionary > Darwinian fitness

Darwinian fitness

A relative measure of reproductive success of an organism in passing its genes to the next generation‘s gene pool
In biology, “fitness” refers to a biological condition in which a competing variant is increasing in frequency relative to other competing variants in a population. It is also referred to, in particular, as Darwinian fitness. Darwinian fitness differs from the “physical fitness”, which is more associated with health, muscle tissues, oxygen, and physical effort. Darwinian fitness is more concerned about reproductive success. Darwinian fitness describes how successful an organism has been at passing on its genes. The more likely that an individual is able to survive and live longer to reproduce, the higher is the fitness of that individual. Thus, it may indicate the relative measure of reproductive success of an organism in passing its genes to the next generation. It denotes the relative ability of an individual (or population) to survive, reproduce and propagate genes in an environment. Thus, when one says an organism is biologically fit, it means that the organism is adapted and suitable to its environment based on its relative reproductive success with respect to its population. There are two ways through which fitness can be measured: absolute fitness and relative fitness.
See also:

You will also like...

Oligodendrocyte and Schwann cell
The Central Nervous System

Myelin sheath is essential for a faster conductivity of signals. Know more about this feature of some neurons in the Cen..

Origins of Life on Earth
Origins of Life on Earth

Earth was created around 4.5 billion years ago and life began not long after. Primitive life likely possessed the elemen..

Lentic community
Freshwater Communities & Lentic Waters

Lentic or still water communities can vary greatly in appearance -- from a small temporary puddle to a large lake. The s..

The process of photosynthesis
Photosynthesis – Photolysis and Carbon Fixation

Photosynthesis is the process that plants undertake to create organic materials from carbon dioxide and water, with the ..

Neural Control Mechanisms
Neural Control Mechanisms

Neurons generate electric signals that they pass along to the other neurons or target tissues. In this tutorial, you wil..

Peppered moth ("Biston betularia") melanic and light form
Examples of Natural Selection

Darwin's Finches are an example of natural selection in action. They are an excellent example of the way species' gene p..