One NPF is called WASp, as it is defective in patients with Wiskott-Aldrich syndrome.

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#XL - T Zoology

Mutationist- Theories were advanced by some geneticists who observed that discretely different new phenotypes can arise by a process of mutation.

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Ronald A. Fisher, John B. S. Haldane and Sewall Wright- which showed that mutation and natural selection together cause adaptive evolution.

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 Neutral theory of molecular evolution- Developed by Motoo Kimura, who argued that most of the evolution of DNA sequences occurs by chance (genetic drift) rather than by natural selection.

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Theory of recapitulation - Ernst Haeckel
He proposed that the embryonic development of an individual organism (its ontogeny) followed the same path as the evolutionary history of its species (its phylogeny).

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Bergmann’s rule: populations in colder climates tend to have greater body mass than those

in warmer climates. This pattern is so common that it has a name.

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#XL - T Zoology

Haldane’s rule: hybrid sterility or hybrid inviability is often limited to the heterogametic sex. (The heterogametic sex is the one with two different sex chromosomes, while the homogametic sex has two sex chromosomes of the same type).