The process of speciation is completed with the cessation of genetic exchange. Peter R. Grant cessationcompleteexchange Change image and share on social
Islands are known to differ in the food supply available to ground finches, mainly seeds. Peter R. Grant differfinchfood Change image and share on social
We observe closely related species in sympatry and infer how they evolved from a common ancestor. Peter R. Grant ancestorcloselycommon Change image and share on social
Genes that underlie the capacity to receive, use and transmit information are the evolving properties. Peter R. Grant capacityevolvegene Change image and share on social
Thus the genetic basis to the origin of bird species is to be sought in the inheritance of adult traits that are subject to natural and sexual selection. Peter R. Grant adultbasisbird Change image and share on social
Thus mating of females was strictly along the lines of paternal song. Peter R. Grant femalelinemate Change image and share on social
The independent role of morphology in mate choice is revealed by the rare instances where the usual association between song and morphology is disrupted. Peter R. Grant associationchoicedisrupt Change image and share on social
