BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Chapter 39, Problem 3SA
Summary Introduction
Introduction:
Fruit flies have a wormlike body with no wings. The fruit flies feed on yeast cells that grow on decaying fruit. The larvae of wild fruit flies have two distinct types of feeding behavior which are known as “rover” and “sitter”.
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Sexual selection occurs whena. one sex has a higher fitness than the otherb. a species exhibits sexual dimorphismc. there is a male dominance hierarchy and only the alpha male reproduces. d. There is monogamous mating.e. A trait is favored by one sex such that individuals of the opposite sex
possessing that trait have an increased likelihood of reproducing.
Certain species of blind fish living in perpetual darkness in the ocean depths have evolved from ancestors
that could see. Research indicates that the brain centers for vision in these fish is degenerating, whereas
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O
A. exposure to mutagens that caused the loss of vision
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C. infection by cave-dwelling microorganisms that has led to degeneration of the eyes
O D. extreme high pressure at the ocean depths causing a deterioration of vision
Gene interactions can be affected by factors other than other genes. The type of gene interaction depicted in the changing coat color of Canadian Snowshoe hare in the picture below is known as_?
a. Linear interaction
b. Internal interaction
c. External interaction
d. Epistatic interaction
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