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  2. Concordance (genetics) - Wikipedia

    en.wikipedia.org/wiki/Concordance_(genetics)

    In genetics, concordance is the probability that a pair of individuals will both have a certain characteristic (phenotypic trait) given that one of the pair has the characteristic. Concordance can be measured with concordance rates, reflecting the odds of one person having the trait if the other does. The pair of individuals are concordant if ...

  3. Cline (biology) - Wikipedia

    en.wikipedia.org/wiki/Cline_(biology)

    A cline is a spatial gradient in a single specific trait, rather than in a collection of traits; [3] a single population can therefore have as many clines as it has traits, at least in principle. [4] Additionally, as Julian Huxley recognised, these multiple independent clines may not act in concordance with each other.

  4. List of examples of convergent evolution - Wikipedia

    en.wikipedia.org/wiki/List_of_examples_of...

    Convergent evolution—the repeated evolution of similar traits in multiple lineages which all ancestrally lack the trait—is rife in nature, as illustrated by the examples below. The ultimate cause of convergence is usually a similar evolutionary biome , as similar environments will select for similar traits in any species occupying the same ...

  5. Evolution - Wikipedia

    en.wikipedia.org/wiki/Evolution

    Evolution is the change in the heritable characteristics of biological populations over successive generations. [1] [2] It occurs when evolutionary processes such as natural selection and genetic drift act on genetic variation, resulting in certain characteristics becoming more or less common within a population over successive generations. [3]

  6. Convergent evolution - Wikipedia

    en.wikipedia.org/wiki/Convergent_evolution

    Many examples of convergent evolution exist in insects in terms of developing resistance at a molecular level to toxins. One well-characterized example is the evolution of resistance to cardiotonic steroids (CTSs) via amino acid substitutions at well-defined positions of the α-subunit of Na +,K +-ATPase (ATPalpha). Variation in ATPalpha has ...

  7. Phylogenetic inertia - Wikipedia

    en.wikipedia.org/wiki/Phylogenetic_inertia

    Evolution of fish to tetrapods. The basic body plan has been phylogenetically constrained. Most terrestrial vertebrates have a body plan that consist of four limbs. The phylogenetic inertia hypothesis suggests that this body plan is observed, not because it happens to be optimal, but because tetrapods are derived from a clade of fishes (Sarcopterygii) which also have four limbs.

  8. Dual inheritance theory - Wikipedia

    en.wikipedia.org/wiki/Dual_inheritance_theory

    Dual inheritance theory (DIT), also known as gene–culture coevolution or biocultural evolution, [1] was developed in the 1960s through early 1980s to explain how human behavior is a product of two different and interacting evolutionary processes: genetic evolution and cultural evolution.

  9. Evidence of common descent - Wikipedia

    en.wikipedia.org/wiki/Evidence_of_common_descent

    For example, the Out of Africa theory of human origins, which states that modern humans developed in Africa and a small sub-population migrated out (undergoing a population bottleneck), implies that modern populations should show the signatures of this migration pattern. Specifically, post-bottleneck populations (Europeans and Asians) should ...