Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Question
Chapter 20.2, Problem 1BC
Summary Introduction
To analyze:
Figure 19.18b is an example for intersexual selection and in the figure; colourful and long tail feathers and the robustness of male peacocks display directly affects to choose male peacocks by female peahens. Female choice of the figure 19.18b should be identified as an example for prezygotic or postzygotic isolating.
Introduction:
Sexual selection refers to the individuals with certain traits are more engaging with the successful reproduction than other individuals. Sexual dimorphism refers to a significant difference between the appearances of the two sexes within a species. Intersexual selection and intrasexual selection are the two different ways that sexual operation can be done.
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Chapter 20 Solutions
Principles of Biology
Ch. 20.1 - Prob. 1CCCh. 20.1 - Prob. 1TYKCh. 20.1 - Prob. 2TYKCh. 20.2 - Prob. 1BCCh. 20.2 - Is this an example of a prezygotic or a...Ch. 20.2 - Is this an example of a prezygotic or a...Ch. 20.2 - Prob. 1TYKCh. 20.2 - Which of the following is not an example of a...Ch. 20.3 - Prob. 1BCCh. 20.3 - Prob. 1CC
Ch. 20.3 - Which of the following is an example of allopatric...Ch. 20.3 - Prob. 2TYKCh. 20.4 - Prob. 1CCCh. 20.4 - Prob. 2CCCh. 20.4 - Prob. 1TYKCh. 20 - Macroevolution refers to evolutionary changes that...Ch. 20 - Prob. 2TYCh. 20 - Prob. 3TYCh. 20 - Prob. 4TYCh. 20 - Prob. 5TYCh. 20 - Prob. 6TYCh. 20 - Prob. 7TYCh. 20 - Prob. 8TYCh. 20 - Prob. 9TYCh. 20 - Evolutionary changes in the rate or timing of...Ch. 20 - Prob. 1CCQCh. 20 - Compare and contrast different mechanisms of...Ch. 20 - A principle of biology is that populations of...Ch. 20 - Prob. 1CBQCh. 20 - Discuss the type of speciation (allopatric or...
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- ADJUST Negative assortative mating means that organisms choose mates that are different from themselves. If negative assortive mating occurs in a population, what would expect to happen to genotype frequency over generations? O a) Frequency of the heterozygous genotype will increase. b) Frequency of the homozygous genotypes will decrease. O c) Frequency of the homozygous genotypes will increase. O d) Both A and B AUTO ||||||||| Cancel Revertarrow_forwardWhat are some other prezygotic reproductive barriers besides a mating dance?arrow_forwardExplain the significance of reproductive isolating mechanisms and distinguish among the various prezygotic and postzygotic barriers.arrow_forward
- What would a study of both monozygotictwins raised together and monozygotictwins raised apart tell you about environmentalinfluences?arrow_forwardDirection: 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 lakesarrow_forwardWhat does the Hardy Weinberg equation do? A) Show if a population is evolving B) Shows how many dominant alleles there are C) Does not work with asexual reproductionarrow_forward
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