Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 24, Problem 2COQ
Discuss the type of
- a. A pregnant female rat is transported by an ocean liner to a new continent.
- b. A meadow containing several species of grasses is exposed to a pesticide that promotes nondisjunction.
- c. In a very large lake containing several species of fishes, the water level gradually falls over the course of several years. Eventually, the large lake becomes subdivided into smaller lakes, some of which are connected by narrow streams.
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Would each of the following examples of reproductive isolation be considered a prezygotic or postzygotic mechanism?
A. Horses and donkeys can interbreed to produce mules, but the mules are infertile.
B. Three species of the orchid genus Dendrobium produce flowers 8 days, 9 days, and 11 days after a rainstorm. The flowers remain open for 1 day.
C. Two species of fish release sperm and eggs into seawater at the same time, but the sperm of one species do not fertilize the eggs of the other species.
D. Two tree frogs, Hyla chrysoscelis (diploid) and Hyla versicolor (tetraploid), can produce viable offspring, but the offspring are sterile.
which statement is false?
1)In the context of the evolution of senescence, the aphorism "live fast and die young" means that organisms with a more risky behavior will have a shorter life span.
2)Allopatric speciation is a type of speciation process that takes place in different geographic locations.
Members of two separate species mate and produce hybrid offspring that fail to thrive in the environment. The hybrid genotypes do not suit the hybrid organism for survival using any given niche. Eventually, the hybrid genotypes disappear from the environment. This would be due to:
A. hybrid inviability
B. hybrid sterility
C. gametic incompatibility
D. pre-zygotic isolation
E. infra-gametic disruption
Chapter 24 Solutions
Biology
Ch. 24.1 - Can you think of another example of two different...Ch. 24.1 - Prob. 1CSCh. 24.1 - Is temporal isolation an example of a prezygotic...Ch. 24.1 - Prob. 3CCCh. 24.2 - Prob. 1CSCh. 24.2 - Prob. 1EQCh. 24.2 - Prob. 2EQCh. 24.2 - Prob. 3EQCh. 24.2 - Prob. 1CCCh. 24.2 - Prob. 2CC
Ch. 24.4 - Evo-Devo: Evolutionary Developmental Biology...Ch. 24.4 - Prob. 1CSCh. 24.4 - Prob. 2CCCh. 24 - Macroevolution refers to evolutionary changes that...Ch. 24 - Prob. 2TYCh. 24 - Prob. 3TYCh. 24 - Prob. 4TYCh. 24 - Prob. 5TYCh. 24 - Prob. 6TYCh. 24 - Prob. 7TYCh. 24 - Prob. 8TYCh. 24 - Prob. 9TYCh. 24 - Prob. 10TYCh. 24 - What is the key difference between prezygotic and...Ch. 24 - What are the key differences between gradualism...Ch. 24 - Prob. 3CQCh. 24 - Prob. 1COQCh. 24 - Discuss the type of speciation (allopatric or...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- a. What are the various types of reproductive isolating mechanisms that can lead to speciation? b. What are the different modes of speciation? c. Explain how evolution produce the tremendous amount of diversity among organisms.arrow_forwardIndicate whether each of the following conditions would tend to cause speciation to occur faster (F), or if it would tend to slow down or prevent speciation (S). Put either an F or an S in each box. A. a small sub-group of a population becomes geographically isolated from the main population and experiences new environmental conditions B. a large population of herbivores lives in an environmental where the conditions have remained stable over a long period of time C. a colony of monkeys clinging to floating debris is washed out to sea by a storm and lands on an island with diverse habitats, abundant food, but without any other primates D. a large population of a migratory species splits up every year and takes different routes to their common mating territoryarrow_forwardWhy does sympatric speciation via allopolyploidy occur? A. When disruptive selection and assortative mating act contemporaneously (during the same time) B. When strong prezygotic isolation prevents hybridization between two species C. When meiotic error in a single species results in unreduced gametes that can self-fertilize D. When individuals of two species mate and their offspring are sterile but eventually produce unreduced gametes that self-fertilize O E. When geographic isolation and natural selection occur contemporaneouslyarrow_forward
- Compare the forms of speciation that are slow to those that occur more rapidly. Make a list of the slow and fast forms. With regard to mechanisms of genetic change, what features do slow and rapid speciation have in common? What features are different?arrow_forwardIn Figure 2 a diagram shows how traits are shared (or not shared) in different generations. Based on the diagram: a. A, represents a plesiomorph trait. In how many generations is A shared (symplesiomorph)? b. C represents an apomorphictrait. What generations share C (synapomorphy)? c. E is considered an autapomorphic trait. Why do you think? d. What about B and D? How do we classify them?arrow_forward27) In the fruit fly speciation experiment, individuals from separate populations that were raised using the same food source were more likely to attempt mating with each other than individuals raised on different food sources. Why? A) Because they had adapted to their environment in the same way B) Because this is an example of allopatric speciation C) Because the separate populations were able to carry out some gene flow D)Because the jars were accidently placed next to each other so the males and females were able to recognize each 28) What is needed for natural selection to occur? A) Variation sexual reproduction, competition B) Variation, heritability competition C)Variation, competition, time D) Heritability, competition, sexual reproductionarrow_forward
- 3) Allopolyploidy involves a.a genetic divergence that results in nonviable offspring. b.a decrease in chromosome number within a single species. c.an increase in chromosome number following hybridization of different species. d.an increase in chromosome number within a single species.arrow_forwardWhich of the following would be a good example of premating reproductive isolation? A. Cross-fertilizations between the gray treefrogs, Hyla versicolor and H. chrysoscelis result in a high degree of mortality prior to hatching of hybrid eggs. B. The mule, a hybrid between horses and donkeys is viable, but sterile. C. Males of H. versicolor produce an advertisement call with a much slower pulse rate than males of H. chrysoscelis and females use pulse rate differences to avoid mating with the wrong species. D. Hybrid offspring are produced from matings between leopard frogs and green frogs, but usually die before the tadpoles metamorphose into froglets.arrow_forwardTwo parents, who are thought to be different species, mate and produce viable hybrid offspring. When two of these hybrids mate, their offspring are not viable. What is the BEST interpretation of this data? A. The original parents are the same species because they can breed together. B. The original parents are the same species because they can breed together and produce viable offspring. C. The original parents are not the same species because they produce hybrids that impair the species’ development or survival in its environment. D. The original parents are not the same species because they produce hybrids that can have reduced viability and fertility when they mate.arrow_forward
- Explain why translocations contribute to speciation.arrow_forwardIndicate the order in which the following steps would take place to result in Parapatric Speciation [enter 1 for the first step, 2 for the second, etc; write only the number -- no words, no spaces] Something happens so that the environment is different in one part of the range relative to the other, even though the populations are still contiguous. As they adapt to their specific environments, the fitness of any hybrid formed is reduced. The populations adapt to their environment in the part of the range where they live. Interbreeding populations connected via gene flow occur across a range. Reproductive isolating mechanisms are selected for so that less fit hybrids are not formed. Two species now exist.arrow_forward18) The common edible frog of Europe is a hybrid between two species, Rana lessonae and Rana ridibunda. The hybrids were first described in 1758 and have a wide distribution, from France across central Europe to Russia. Both male and female hybrids exist, but when the hybrids mate with other hybrids or with adults of either species, they are rarely successful in producing offspring. What can you infer from this information? A) Postzygotic isolation exists between the two frog species. B) Prezygotic isolation exists between the two frog species. C) These two species are likely in the process of fusing back into one species. D) The hybrids form a separate species under the biological species concept. 19) There is an island in the middle of a large river that houses a large population of ants. Damming of the river causes the island to flood and only the highest points of the island are now above water. The ants cannot swim, so are now in multiple isolated populations. Which of the…arrow_forward
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