Biology: The Unity and Diversity o...

15th Edition

Cecie Starr + 3 others

ISBN: 9781337408332

Textbook Problem

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Whether a fruit fly is a sitter or a rover depends upon its ________.

a. diet as a larva

b. age

c. genotype at one specific locus

d. oxytocin level

Summary Introduction

Concept introduction: Behavior is the capacity of an animal to learn through experience. Behavioral ecology is the study of how natural selection shapes the behavior of an organism. Studies of behavioral differences within a species or among related species can shed light on the proximate causes of a behavior and the ultimate causes that favored the behavior.

Explanation

Reasons for the correct statement:

Natural fitness is affected by the variations in behavior; therefore, the heritable behavioral traits will evolve under natural selection. Most of the behavior has a polygenic basis. The fruit fly has two different feeding behaviors namely sitter and rover. In certain cases, difference in the behavior can be traced to allele difference at a single gene.

Option c. is given as “genotype at one specific locus”. The feeding behavior of the fruit fly is determined by the foraging gene. If the larva with the dominant allelic gene is at this foraging gene locus, then it acquires a rover phenotype. If the larva with the recessive allele is present at the foraging gene locus, then it becomes a sitter phenotype. Thus, the feeding behavior of fruit fly can be identified by the genotype at its specific gene locus. Hence, option c. is correct answer...

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Biology: The Unity and Diversity o...

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Biology: The Unity and Diversity o...

Whether a fruit fly is a sitter or a rover depends upon its ________. a. diet as a larva b. age c. genotype at one specific locus d. oxytocin level

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Biology Biology: The Unity and Diversity of Life (MindTap Course List)15th Edition

Whether a fruit fly is a sitter or a rover depends upon its ________.

a. diet as a larva

b. age

c. genotype at one specific locus

d. oxytocin level

Match the M words with their defining features. _ musclea.actins partner _ muscle twitchb.delivers cont...

Complementary foods can be introduced 3 months. ____ True _False