Concept explainers
What type of reproductive barrier applies to each of these scenarios?
a. Water buffalo and cattle can mate, but the embryos die early in development.
b. Scientists try to mate two species of dragonfly that inhabit the same pond at the same time of day. However, females never allow males of the other species to mate with them.
c. One species of reed warbler is active in the upper parts of the canopy, while another species of reed warbler is active in the lower canopy. Both species are active during the day.
d. Scientists mate two parrots from different populations to see if
Want to see the full answer?
Check out a sample textbook solutionChapter 14 Solutions
CONCEPTS & INVESTIGATIONS CUSTOM
Additional Science Textbook Solutions
Anatomy & Physiology (6th Edition)
Biology Science Notebook
Loose Leaf For Integrated Principles Of Zoology
Genetics: Analysis and Principles
Laboratory Manual for Holes Human Anatomy & Physiology Fetal Pig Version
Human Anatomy & Physiology (Marieb, Human Anatomy & Physiology) Standalone Book
- If you are a small animal with limited distribution, and has a small population size, what combination of reproductive strategies do you think would be ideal for the organism? Justify your answer.arrow_forwardWhich statement about prezygotic barriers is false? A.They can arise from the evolution of the structure of sexual organs. B.They can arise from the specific interaction of plants with insect pollinators. C.They can arise from mate selection behaviors. D.They can arise from low fertility of hybrids.arrow_forwardYou discover a new species of reptile that can either lay eggs or have live birth. Rats and other small mammals consume the eggs in some areas. In which environment would you expect viviparity? A. High abundance of rats B. Low abundance of rats choose between a and b and also provide rationalearrow_forward
- Which is NOT an alternative mating strategy for sexually selected males who do not engage in direct combat with rivals? A. mate guarding B. sperm competition C. infancticide D. stealth tecnhiquesarrow_forwardMice that experience stress such as a food shortage will sometimes abandon their young. Explain how this behavior might have evolved in the context of reproductive trade-offs and life history.arrow_forwardConservation biologists have altered the evolution of salmon populations in captive-breeding programs. Wild female salmon tend to produce fewer large eggs because the large eggs contain more nutrients for the off spring, giving each individual a greater chance to survive. After just a few generations, however, captive-bred females now lay greater numbers of small eggs. Suggest a possible adaptive advantage for many small eggs in the captive-bred environment. What would you predict regarding the reproductive success of captive-bred females released in the wild?arrow_forward
- Research and find a K-selected species (other than humans), and explain the pressures and resources that impact this strategy. Also explain how your chosen organism works to combat pressures of selection, resource availability, and environmental stressors that impact successful offspring production.arrow_forwardIn populations subjected to high levels of predation a. individuals should invest little in reproduction so as to maximize their survival. b. individuals should produce few offspring and invest little in any of them. c. individuals should invest greatly in reproduction because their chance of surviving to another breeding season is low. d. individuals should stop reproducing altogether.arrow_forwardWhich statement best explains why an understanding of life-history trade-offs is important when examining the fitness of an organism? A. Because individuals may not be producing the maximum number of offspring they possibly can in any particular breeding season. B. Because in any particular breeding season, individuals may need to produce fewer offspring to enhance their own survival. C. Because individuals need to live longer, so they will not produce the maximum number of offspring each season. D. Because when individuals need offspring, they can choose whether to reproduce or not.arrow_forward
- Based on the biological species concept, which of the following would lead biologists to conclude that different populations of lizards were actually a single species rather than two different species? A.) lizards from the two different populations mate rarely, and produce hyrbid offspring that are sterile B.) Lizards from the two differnt populations mate during different seasons C.) Lizards from the two different populations mate regularly and produce sterile offspring D.) Lizards from the two different populations matre regularly and produce viable offspring capable of reprodarrow_forwardHow is the booby’s ritual dance a prezygotic reproductive barrier?arrow_forwardPandas have become specifically adapted to bamboo forests because they depend on the bamboo for food. Pandas also have a very slow reproduction rate. Females are only capable of becoming pregnant during a 24-10-72-hour window once per year, and they typically only give birth to one cub in the wild. Based on this information, if a major environmental catastrophe like a volcanic eruption or meteor strike destroyed all bamboo forests within the panda ecosystem, what will most likely happen to the panda species? The species will evolve into a new species that is capable of eating new food. The species will evolve adaptations to eat another food source that is plentiful. The species will migrate to a different location that has more bamboo to eat. The species will become extinct since it cannot adapt to the changes fast enough.arrow_forward