In a species of fish, two neighboring populations occupy slightly different habitats; the first mainly lives in shallow waters with low predation, the second lives in deeper waters with increased predation. Males in the first population develop a long anal fin as secondary sexual trait in population, but males in the second population do not have long fins. When researchers artificially attached long anal fins to males from the second population, they found that female fish much preferred males with the longer fins. They also found that gene flow between these populations exist, and that long anal fins make it harder to swim fast. Why aren't long fins more frequent in this population? Natural selection is counteracting sexual selection O There isn't enough genetic variation for long tails to develop These populations are in the process of speciating, and eventually females will develop a preference for short tails. O Drift is causing long tails to disappear from the population

In a species of fish, two neighboring populations occupy slightly different habitats; the first mainly lives in shallow waters with low predation, the second lives in deeper waters with increased predation. Males in the first population develop a long anal fin as secondary sexual trait in population, but males in the second population do not have long fins. When researchers artificially attached long anal fins to males from the second population, they found that female fish much preferred males with the longer fins. They also found that gene flow between these populations exist, and that long anal fins make it harder to swim fast. Why aren't long fins more frequent in this population? Natural selection is counteracting sexual selection O There isn't enough genetic variation for long tails to develop These populations are in the process of speciating, and eventually females will develop a preference for short tails. O Drift is causing long tails to disappear from the population

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter1: A View Of Life

Section: Chapter Questions

Problem 14TYU: INTERPRET DATA Compare the two graphs in Figure 1-17. What information does the second graph...

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