EBK BIOLOGY
4th Edition
ISBN: 8220102797376
Author: BROOKER
Publisher: YUZU
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Chapter 25.2, Problem 1EQ
Summary Introduction
To determine: The hypothesis given by Podos regarding the effect of beak size on bird’s song.
Introduction: Podos worked on Darwin's finches to evaluate the effect of the bird’s song on the mating patterns. He observed the effect of certain parameters on the reproductive physiology of the birds on Galapagos islands.
Summary Introduction
To determine: The way through which changes in the beak-shaped caused reproductive isolation among Darwinian finches.
Introduction: The changes in the morphology of the beak causes a difference in the sound produced by the birds that can affect the mating process and finding the member of the species of the opposite sex.
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Chapter 25 Solutions
EBK BIOLOGY
Ch. 25.1 - Can you think of another example of two different...Ch. 25.1 - Prob. 1BCCh. 25.1 - Is temporal isolation an example of a prezygotic...Ch. 25.1 - Prob. 3CCCh. 25.2 - Prob. 1BCCh. 25.2 - Prob. 1EQCh. 25.2 - Prob. 2EQCh. 25.2 - Prob. 3EQCh. 25.2 - Prob. 1CCCh. 25.2 - Prob. 2CC
Ch. 25.4 - Evo-Devo: Evolutionary Developmental Biology...Ch. 25.4 - Prob. 2CCCh. 25.4 - Prob. 1BCCh. 25.4 - Prob. 3CCCh. 25 - Macroevolution refers to evolutionary changes that...Ch. 25 - Prob. 2TYCh. 25 - Prob. 3TYCh. 25 - Prob. 4TYCh. 25 - Prob. 5TYCh. 25 - Prob. 6TYCh. 25 - Prob. 7TYCh. 25 - Prob. 8TYCh. 25 - Prob. 9TYCh. 25 - Prob. 10TYCh. 25 - What is the key difference between prezygotic and...Ch. 25 - What are the key differences between gradualism...Ch. 25 - Prob. 3CQCh. 25 - Prob. 1COQCh. 25 - Discuss the type of speciation (allopatric or...
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- Scientists found that different beak shapes correlate with different mating songs in Darwin's finches. Which hypothesis does this support? A. Darwin's finches are not different species according to the Biological Species Concept. B. Adaptation to different food sources led to behavioral isolation in Darwin's finches. C. Adaptation to different food sources likely occurred after reproductive isolation in Darwin's finches. D. Mating songs are primarily determined by the acoustics of different beaks.arrow_forwardWhat barriers prevent wood frogs and leopard frogs from interbreeding in nature?arrow_forwardWhat is the common ancestor of the Galapagos finches? What are the thirteen Galapagos finches? What characteristics make each of the thirteen finches a distinct species? How is each finch isolated from the others? What habitat does each finch live?arrow_forward
- A subpopulation of a species of birds migrates to a different location from the rest of the species for breeding purposes. How might the genes change in the subpopulation? A. Their genes would change randomly and eventually revert to normalcy, which would allow the subpopulation to return to the main population. B. Their genes would change to better allow them to survive and reproduce in their new location. C. Their genes would not change at all and they would merely be a subpopulation living in a different location. D. Their genes would change so that they would continue to be well-adapted to their former location.arrow_forwardAccording to the cladogram, which is more closely related to the Sun bear: the Sloth bear or the Polar bear? Explain.arrow_forwardWhat might have happened if finches didn't evolve into many different species?arrow_forward
- Darwin observed that finches in the Galapagos Islands were more similar to finches in South America than to finches in Great Britain. True Falsearrow_forwardDarwin’s finches have different beaks in terms of size and shape to be able to eat different food sources like insects, nectar, and seeds. Cactus finches have longer, more pointed beaks to probe cactus flowers compared to their relatives, the ground finches. If a plant disease killed a large portion of the cacti on the Galapagos islands, what would the future populations of finches look like in terms of beak size and shape? Use your knowledge of natural selection to determine which option is most likely. Ground finches would survive and pass on their shorter and wider beaks, so there would be a higher proportion of finches in future generations that have short and wide beaks. Ground finches would survive and pass on their beaks, but they would mate with the remaining cactus finches, creating a new hybrid that is somewhere between short versus long and narrow versus wide. Cactus finches would compete for food with ground finches and exhibit resource partitioning, so the beaks…arrow_forwardIs sexual selection or natural selection the driver for the differences between males and females? a. In the hollyhock weevil (Rhopalapion longirostre) the females a have much longer rostrum. The length of rostrum is correlated with offspring survival but not mating frequency. b. In the marine iguana species (Amblyrhynchus cristatus) on the islands near Ecuador the males often exceed expected size on a given island. Male size is correlated with survival and number of mating events.arrow_forward
- Consider a population of toads living in a canyon here in San Diego. Identify a physical barrier that might emerge to separate these toads into 2 separate groups . Then, explain HOW these groups may diverge into separate species over time through allopatry.arrow_forwardName the type of speciation that results when a species cannot mate due to a change in their use of a habitat. Explain how it results in speciation.arrow_forwardWhat major environmental change happened in 1977 and how did this impact the finches?arrow_forward
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