Ch.25 - SpeciationWorksheetSee all chapters
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Ch.1 - Introduction to Biology
Ch.2 - Chemistry
Ch.3 - Water
Ch.4 - Carbon
Ch.5 - Biological Molecules
Ch.6 - Cells
Ch.7 - The Membrane
Ch.8 - Energy and Metabolism
Ch.9 - Respiration
Ch.10 - Photosynthesis
Ch.11 - Cell Signaling
Ch.12 - Cell Division
Ch.13 - Meiosis
Ch.14 - Mendelian Genetics
Ch.15 - Chromosomal Theory of Inheritance
Ch.16 - DNA Synthesis
Ch.17 - Gene Expression
Ch.18 - Regulation of Expression
Ch.19 - Viruses
Ch.20 - Biotechnology
Ch.21 - Genomics
Ch.22 - Development
Ch.23 - Evolution by Natural Selection
Ch.24 - Evolution of Populations
Ch.25 - Speciation
Ch.26 - History of Life on Earth
Ch.27 - Phylogeny
Ch.28 - Prokaryotes
Ch.29 - Protists
Ch.30 - Plants
Ch.31 - Fungi
Ch.32 - Overview of Animals
Ch.33 - Invertebrates
Ch.34 - Vertebrates
Ch.35 - Plant Anatomy
Ch.36 - Vascular Plant Transport
Ch.37 - Soil
Ch.38 - Plant Reproduction
Ch.39 - Plant Sensation and Response
Ch.40 - Animal Form and Function
Ch.41 - Digestive System
Ch.42 - Circulatory System
Ch.43 - Immune System
Ch.44 - Osmoregulation and Excretion
Ch.45 - Endocrine System
Ch.46 - Animal Reproduction
Ch.47 - Nervous System
Ch.48 - Sensory Systems
Ch.49 - Muscle Systems
Ch.50 - Ecology
Ch.51 - Animal Behavior
Ch.52 - Population Ecology
Ch.53 - Community Ecology
Ch.54 - Ecosystems
Ch.55 - Conservation Biology
Sections
Species

Solution: In many species, both prezygotic and postzygotic barriers can cause reproductive isolation. Which of the following best describes how behavioral isolation can prevent two species from interbreeding?A.

Problem

In many species, both prezygotic and postzygotic barriers can cause reproductive isolation. Which of the following best describes how behavioral isolation can prevent two species from interbreeding?

A. Members of two species compete for the same territory and the same mates.

B. One species mates only in the winter, while the other species mates only in the fall.

C. The two species have different mating rituals that only attract mates within their own species.

D. When the two species produce offspring, the offspring do not survive to reach sexual maturity.

Solution

Between two related species, a reproductive barrier can be formed that would isolate them from one another. This prevents them from forming an offspring out of interbreeding. These barrier may be present either before or after the formation of a zygote. In the given problem, the behavioral differences that would prevent them from mating with one another is a prezygotic barrier.

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