Direction: For each of the five examples below, give the name of the isolating mechanism and specify if it is prezygotic or postzygotic isolation. In some bee populations, only large bees are big enough to unfold flower petals and obtain nectar and pollen. A cross between two fish species occurs but development only occurs up to 16-cell stage. In drosophila, when sperm from one species enters the other species, the sperm is immobilized and unable to fertilize the Fireflies have a unique lighting pattern. The frequency of lighting is species specific. Fireflies in the same area will not mate with those having a different lighting frequency. 5. Two species of butterflies are found in northern Michigan, but one species is found only near rivers and streams, the other near lakes

Direction: For each of the five examples below, give the name of the isolating mechanism and specify if it is prezygotic or postzygotic isolation. In some bee populations, only large bees are big enough to unfold flower petals and obtain nectar and pollen. A cross between two fish species occurs but development only occurs up to 16-cell stage. In drosophila, when sperm from one species enters the other species, the sperm is immobilized and unable to fertilize the Fireflies have a unique lighting pattern. The frequency of lighting is species specific. Fireflies in the same area will not mate with those having a different lighting frequency. 5. Two species of butterflies are found in northern Michigan, but one species is found only near rivers and streams, the other near lakes

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter19: Evolutionary Change In Populations

Section19.4: Genetic Variation In Populations

Problem 8LO

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A. Direction: For each of the five examples below, give the name of the isolating mechanism and specify if it is prezygotic or postzygotic isolation. a. In some bee population, only large bees are big enough to unfold flower petals and obtain nectar and pollen. b. A cross between two fish species occurs but development only occurs up to 16-cell stage. c. In drosophila, when sperm form one species enters the other species, the sperm is immobilized and unable to fertilized egg. d. Fireflies have a unique lighting pattern. The frequency of lighting is species specific. Fireflies in the same area will not mate with those having a different lighting frequency. e. Two species of butterflies are found in northern Michigan, but one species is found only near rivers and streams, the other near lakes. B. Read analyze the statements given below. Then, justify your answer. a. A common farming practice is to breed a female horse with a male donkey. The result is a very robust animal – the mule.…
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