8. Which of the following is an example of mechanical isolation? A. Changes in songs sung by Eastern and Western meadowlarks B. Changes in recognition proteins on the surface of sea urchin eggs C. Changes in damselfly penis shape D. The fact that mules are sterile
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A. Changes in songs sung by Eastern and Western meadowlarks: This is an example of behavioral isolation, not mechanical isolation. Behavioral isolation refers to differences in mating behaviors or rituals that prevent individuals of different species from Show more…
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Which of these is an example of mechanical isolation? a. Sperm cannot reach or fertilize an egg. b. Courtship patterns differ. c. Organisms live in different locales. d. Organisms reproduce at different times of the year. e. Genitalia are unsuitable to each other.
Which of the following is an example of prezygotic reproductive isolation?a. the flashing patterns of fireflies b. the complex differences in the genitalia of insects c. the different emergence times of cicada species d. the separation in habitat use of head and body lice e. all of the above
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There are several mechanisms through which reproductive isolation occurs. Which situation is an example of behavioral isolation? A. Mules, the offspring of a male donkey and a female horse, are unable to reproduce because they are sterile. B. Males of different, closely related species of fireflies signal for mates by flashing different light sequences. C. The reproductive organs of snails only properly align when the male and female belong to the same species. D. Red and purple sea urchins cannot reproduce with one another because the sperm and egg cannot fuse.
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