Evolution BasicsA bird population evolves. Place the "steps" of what occurs in order.1E During a drought, these individuals with longer beaks can reach food buried underground2: The birds with longer beaks get more food3E Over time, the population has more individuals with longer beaksA species of bird has genetic variation in beak lengthBirds that are well fed survive and reproduce:::: Mechanisms of EvolutionIn the previous question, what was the mechanism of evolution?O gene flowO genetic driftO natural selectionmutation

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A bird population evolves. Place the "steps" of what occurs in order. 1 I During a drought, these individuals with longer beaks can reach food buried underground The birds with longer beaks get more food 3 | Over time, the population has more individuals with longer beaks 4 A species of bird has genetic variation in beak length Birds that are well fed survive and reproduce :::: :::: :::: 2.

A bird population evolves. Place the "steps" of what occurs in order. 1 I During a drought, these individuals with longer beaks can reach food buried underground The birds with longer beaks get more food 3 | Over time, the population has more individuals with longer beaks 4 A species of bird has genetic variation in beak length Birds that are well fed survive and reproduce :::: :::: :::: 2.

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter12: Processes Of Evolution

Section: Chapter Questions

Problem 1DID

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Two species of fish had recently undergone sympatric speciation. The males of each species had a different coloring through which females could identify and choose a partner from her own species. After some time, pollution made the lake so cloudy it was hard for females to distinguish colors. What might take place in this situation?
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One of Darwin’s finches, the medium ground finch (Geospiza fortis), is found on the small island of Daphne Major. These finches are seedeating birds. A major drought occurred on the island in 1977. Following the drought, the average beak size of medium ground finches had increased about 3%–4%. Why might a drought lead to an evolutionary change in beak size? Propose a hypothesis and explain how you could go about testing it.
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