4. To which prezygotic isolation mechanism does each example below correspond: habitat isolation, temporal isolation, behavioral isolation, mechanical isolation, gametic isolation? Parasites exploit new host species. Differences in binding protein allow sperm to fertilize. Pines release pollen in different seasons. Fireflies give specific patterns of signals. Plant floral tubes have different lengths.

4. To which prezygotic isolation mechanism does each example below correspond: habitat isolation, temporal isolation, behavioral isolation, mechanical isolation, gametic isolation? Parasites exploit new host species. Differences in binding protein allow sperm to fertilize. Pines release pollen in different seasons. Fireflies give specific patterns of signals. Plant floral tubes have different lengths.

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter20: Development Of Evolutionary Thinking

Section: Chapter Questions

Problem 7TYK: Which of the following could be an example of microevolution? a. a slight change in a bird...

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1. What is the difference between microevolution and macroevolution?2. How do biologists define a “biological species”?3. Why is reproductive isolation such a driving force in the process of speciation? 4. To which prezygotic isolation mechanism does each example below correspond: habitat isolation, temporal isolation, behavioral isolation, mechanical isolation, gametic isolation? Parasites exploit new host species. Differences in binding protein allow sperm to fertilize. Pines release pollen in different seasons. Fireflies give specific patterns of signals. Plant floral tubes have different lengths.5. What evidence shows that allopatric speciation can occur in fruit flies raised on different food sources?
Which situation would most likely lead to allopatric speciation? Flood causes the formation of a new lake A storm causes several large trees to fall down A mutation causes a new trait to develop An injury causes an organism to seek out a new food source.
What is the main difference between dispersal and vicariance? One leads to allopatric speciation, whereas the other leads to sympatric speciation One involves the movement of the organism, and the other involves a change in the environment One depends on a genetic mutation occurring, and the other does not One involves closely related organisms, and the other involves only individuals of the same species.
#2: Which of the following sexual selection hypotheses would apply to a species in which elaborate male traits have evolved because females have preferences for these traits, and female preferences have spread through the population simply because they are genetically correlated with the preferred male traits? (chose one answer) a. Chase-away sexual selection b. Indicator "good genes" model c. Fisherian "runaway" sexual selection d. Antagonistic co-evolution e. The parasite hypothesis
1. Which of these populations has all the characteristics needed to evolve by natural selection? A. a population of lizards may be brown or red. The temperature of the eggs determines the color of the baby lizards, and a brown parent lizard is equally likely to give birth to either color of offspring. B. a population of spiders includes individuals that build their webs in triangle shapes and others that build their webs in round shapes. They inherit their web-building strategies from their parents and all shapes are equally successful at catching insects. C. some gazelles are capable of running faster than others, a skill that is partially genetic Faster gazelles tend to live longer and have more offspring. A. Population A B. Population B C. Population C 2. Your friend asks you "If evolution is real, why aren't humans perfectly adapted by now! why do people still get heart disease and cancer and die?" Which of these would be an accurate response you could give? A. Evolution only…
6. Why does raising fruit flies on different food sources potentially lead to speciation?7. What evidence shows that sexual selection and mate choice can lead to speciation?8. What are hybrid viability and hybrid breakdown? 9. Why are donkeys and horses considered separate species even though they can mate?10. How does gene flow support the observation that sympatric animal species do not usually speciate?
An animal breeder, attempting to cross a llama with an alpaca for finer wool, found that the hybrid offspring rarely lived more than a few weeks. This outcome probably resulted from: a. genetic drift. b. prezygotic reproductive isolation. c. postzygotic reproductive isolation. d. sympatric speciation. e. polyploidy.
In the model of allopatric speciation, the geographical separation of two populations: a. is sufficient for speciation to occur. b. occurs only after speciation is complete. c. allows gene flow between them, d. reduces the relative fitness of hybrid offspring. e. inhibits gene flow between them.
Which of the following could be an example of microevolution? a. a slight change in a bird populations color due to a smallgenetic change in the population b. large differences between fossils found near the groundsurface and those found in deep rock layers c. the sudden disappearance of an entire genus d. the direct evolutionary link between living primates andhumans e. a flood that drowns all members of a population
Which variable increases the likelihood of allopatric speciation taking place more quickly? lower rate of mutation longer distance between divided groups increased instances of hybrid formation equivalent numbers of individuals in each population
2. When new species formed because gene flow was blocked by a physical barrier, this is considered... Group of answer choices a.allopatric speciation b.polyploidy c.sympatric speciation
1. What is speciation? 2. What is a “hybrid zone”? 3. What postzygotic barriers are often found in hybrid zones that result in a lack of species fusion? 4. What are the differences among the three possible outcomes for hybrids over time: reinforcement, fusion, and stability?