A popular theory during the 19th century, and implied by Charles Darwin's 1859 On the Origin of Species, was blending inheritance: the idea that individuals inherit a smooth blend of traits from their parents.
Mirda s izjar isim net hulla daɣ awtay wan 1800 tolas otas Charles Darwin daɣ awatay wan 1859 fal enatti n ich-ikil n imudaran, asurtay etari: anazjum n as addinat karrachan tartit n samalan daɣ imarawan nasan