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CHARACTER SEXUAL DIMORPHISM MALES FEED YOUNG Cassin's Vireo No No Red Fox Sparrow Cape May Warbler Cedar Waxwing Golden-Crowned Kinglet Pyrrhuloxia California Gull No No Yes No No No Yes Yes Yes No No Yes

CHARACTER SEXUAL DIMORPHISM MALES FEED YOUNG Cassin's Vireo No No Red Fox Sparrow Cape May Warbler Cedar Waxwing Golden-Crowned Kinglet Pyrrhuloxia California Gull No No Yes No No No Yes Yes Yes No No Yes

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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4) Pretend it's a year later, and you have collected more data to make a more detailed phylogeny. You notice that some of these species of birds are sexually dimorphic (males have significantly different plumage than females, generally much brighter!). You also notice that in some of these species both parents feed the offspring, while in others only the female feeds the offspring. You imagine that having bright males near the nest may tend to attract predators to the young. You want to distinguish between two hypotheses to explain the patterns you see: 1) Males not feeding the young is an adaptation to dimorphism 2) If males don’t feed the young in a species, it will allow them to become brightly colored To begin to address this question, map the characters changes in dimorphism and males feeding the young onto each of the trees on the previous page. CHARACTER SEXUAL DIMORPHISM MALES FEED YOUNG Cassin's Vireo Red Fox Sparrow Cape May Warbler Cedar Waxwing Golden-Crowned Kinglet Pyrrhuloxia No No Yes No No No No Yes No Yes Yes No California Gull No Yes Note: This data is fictional
Transcribed Image Text:4) Pretend it's a year later, and you have collected more data to make a more detailed phylogeny. You notice that some of these species of birds are sexually dimorphic (males have significantly different plumage than females, generally much brighter!). You also notice that in some of these species both parents feed the offspring, while in others only the female feeds the offspring. You imagine that having bright males near the nest may tend to attract predators to the young. You want to distinguish between two hypotheses to explain the patterns you see: 1) Males not feeding the young is an adaptation to dimorphism 2) If males don’t feed the young in a species, it will allow them to become brightly colored To begin to address this question, map the characters changes in dimorphism and males feeding the young onto each of the trees on the previous page. CHARACTER SEXUAL DIMORPHISM MALES FEED YOUNG Cassin's Vireo Red Fox Sparrow Cape May Warbler Cedar Waxwing Golden-Crowned Kinglet Pyrrhuloxia No No Yes No No No No Yes No Yes Yes No California Gull No Yes Note: This data is fictional
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