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Fitness is often defined as a propensity or probability, rather than the actual number of offspring. For example, according to Maynard Smith, "Fitness is a property, not of an individual, but of a class of individuals—for example homozygous for allele A at a particular locus. Thus the phrase 'expected number of offspring' means the average ...
In evolutionary biology, fitness landscapes or adaptive landscapes (types of evolutionary landscapes) are used to visualize the relationship between genotypes and reproductive success. It is assumed that every genotype has a well-defined replication rate (often referred to as fitness ).
In evolutionary biology, an evolutionary tradeoff is a situation in which evolution cannot advance one part of a biological system without distressing another part of it. In this context, tradeoffs refer to the process through which a trait increases in fitness at the expense of decreased fitness in another trait.
Biological altruism: Tends to be centered around fitness exchanges. It can also be called evolutionary or reproductive altruism. It is defined as "increasing other organisms fitness while decreasing the fitness of the actor themselves". In order for this to be true, both the loss of the "actor" and the benefit of the "recipient must be present.
Inclusive fitness is a conceptual framework in evolutionary biology first defined by W. D. Hamilton in 1964. [1] It is primarily used to aid the understanding of how social traits are expected to evolve in structured populations . [ 2 ]
Evolutionary biology is the subfield of biology that studies the evolutionary processes ... (this can be referred to as an organism's fitness). For example, ...
One of the traits that helped make the dinosaurs such an evolutionary success story - thriving for 165 million years - was their fast growth rate, from massive meat-eaters like Tyrannosaurus to ...
Evolutionary game theory (EGT) is the ... is the application of game theory to evolving populations in biology. ... for example, fitness=1 means growth at the average ...