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Why is reproductive isolation insufficient to define a species?
A. Reproductive isolation doesn't take outgroups into account.
B. This definition overlooks artificial reproduction, such as in zoos.
C. This definition excludes organisms that reproduce asexually.
D. Reproductive isolation can be accomplished in a variety of ways.
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- Two 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.Which of the following is an example of postzygotic reproductive isolation?a. Sperm of species A dies in the oviduct of species B before fertilization can take place.b. Hybrid zygotes between species A and B are spontaneously aborted early indevelopment.c. The mating seasons of species A and B do not overlap.d. Males of species A are not attracted to the pheromones produced by the females ofspecies B.Which of the following traits does not describe a r-selected species? A. rapid development B. low parental investment C. high reproductive rates D. short life spans E. late maturation
- What is a cline? A. A gradual change in genetic or phenotypic characteristics of a population within a set geographic space. B. A gradual change in genetic or phenotypic characteristics of a population over geographic space. C. Similar genetic or phenotypic characteristics of a population within the same geographic space. D. Discrete changes in genetic or phenotypic characteristics of a population over geographic space.Options are a. Hybrid offspring. b. Speciation c. Adaptive radiation. d. Mechanical isolation.What is a cline? A. Discrete changes in genetic or phenotypic characteristics of a population over geographic space. B. Similar genetic or phenotypic characteristics of a population within the same geographic space. C. A gradual change in genetic or phenotypic characteristics of a population over geographic space. D. A gradual change in genetic or phenotypic characteristics of a population within a set geographic space.
- Which of the following is a problem with using the Biological Species Concept? A. it doesn't apply to asexual populations B. It doesn't apply to tropical organisms C. it doesn't take into account reproductive compatibility D. there are no issues with this species conceptWe learned from hermaphroditic snails in New Zealand and C. elegans that populations that are undergo both sexual and asexual reproduction in the same population can alter the frequency of outcrossing resulting in changes in genetic diversity. Identify the statement that accurately reflects a real result. a. Sexual reproduction prevents the ability of snails and worms to coevolve with their parasites. b. Sexual reproduction frequency increases in the presence of a stressor, like pathogens and parasites. c. Asexual reproduction is favored when there are pathogens and parasites in the environment. d. Asexual reproduction enables the Red Queen hypothesis to play out and enable the pathogen to win.Two species of beetle are physically unable to mate with one another, despite being otherwise morphologically identical, because of the different structure of their reproductive organs. What type of isolating mechanism is involved? Group of answer choices A. behavioral isolation B. gametic isolation C. mechanical isolation D. temporal isolation E. habitat isolation
- 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.What role does geographic isolation play in the formation of a new species? Group of answer choices A.If two populations become isolated geographically, then the two populations cannot interbreed with one another. There will be gene flow between the two. This will allow the two isolated populations to evolve independently leading to new species. B. If two populations become isolated geographically, then the two populations can interbreed with one another. There will be no gene flow between the two. This will allow the two isolated populations to evolve independently leading to new species. C. None of the answers are correct D. If two populations become isolated geographically, then the two populations cannot interbreed with one another. There will be no gene flow between the two. This will allow the two isolated populations to evolve independently leading to new species.Direction: Read each question carefully and choose the correct answer from the choices below. A. Temporal isolation B. Mechanical isolation C. Gametic isolation D. Allopatric speciation E. Parapatric isolation 1. It occurs when the groups that evolved to be separate species are geographic neighbors. 2. The differences in reproductive organs prevent successful interbreeding 3. The different groups may not be reproductively mature at the same season, or month or year. agoXMO 4. It occurs when some members of a population become geographically separated from the other members thereby preventing gene flow. 5. It is the incompatibilities between egg and sperm prevent fertilization.
