Answered: In an investigation of fruit fly…

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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In an investigation of fruit fly behavior, an enclosed choice chamber was used to test whether the
spatial distribution of flies is affected by the presence of a substance placed at one end of the
chamber. To test the flies’ preference for different substances, 50 flies were introduced into the
choice chamber. A piece of ripe banana was placed at the end of the chamber on side A and a
piece of unripe banana was placed at the end of the chamber on side B (Figure 1). The positions
of the flies were observed and recorded at the start of the experiment and after 10 minutes (Table
1).

Side A
Middle
Side B
Substance
Substance
Figure 1. Fruit fly choice chamber
Time (Minutes)
Side A
Middle
Side B
19
15
16
10
32
11
Table 1. Distribution of fruit flies in the choice chamber at different time periods

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