A. Explain which force of evolution is seen here by a hybrid bird landing on an island that is not its home and breeding with the indigenous population. B. Explain which force of evolution randomly chooses an individual from a larger gene pool to form a new, smaller population with less genetic variety. Tale of Speciation on Daphne Major"Speciation, the process by which two species form from one, involves thedevelopment of reproductive isolation of two divergent lineages.""11https://www.youtube.com/watch?v=MCM23M-CCog&t=17sThis is an interesting tale of a small population, an immigrant, incest, andisolation. Good thing these are birds. In 1981 a population of finches of thespecies Geospiza fortis lived on the Galapagos island of Daphne Major. Animmigrant landed on the island. It was a hybrid of two finch species fromanother island. It's genetic make up was 66% Geospiza fortis and 34%Geospiza scandens (another common Galapagos finch species). It camefrom an unknown island, was unusually large, had a huge beak, and sang astrange song. Over four generations this hybrid bred with other G. fortisfinches on the island until a drought occurred, wiping out all but one brotherand sister.The brother and sister had no choice but to breed with each other (scandal!).Their offspring were different from either of them or other finches on theisland. The male's song was strange because in learning the song from thefather, it was copied incorrectly. But, females of this new populationunderstood the song even though it was wrong. Members of the greater G.fortis population ignored the incorrect song and would not mate with themales who sang it. A barrier was in place that originally resulted from oneimmigrant being separated from its own population somewhere else, and itslineage ended up being behaviorally isolated by an incorrect learnedbehavior.

Force of Evolution -- Evolution occurs after a long and continuous mechanism . Mutation , genetic…

A. Explain which force of evolution is seen here by a hybrid bird landing on an island that is not its home and breeding with the indigenous population. B. Explain which force of evolution randomly chooses an individual from a larger gene pool to form a new, smaller population with less genetic variety

A. Explain which force of evolution is seen here by a hybrid bird landing on an island that is not its home and breeding with the indigenous population. B. Explain which force of evolution randomly chooses an individual from a larger gene pool to form a new, smaller population with less genetic variety

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter19: Population Genetics And Human Evolution

Section: Chapter Questions

Problem 25QP: Genomics and Human Evolution The Denisovan genome contains sequences that originated from an unknown...

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