If two populations of a single species become geographically separated, over time they may diverge into separate species by __________ speciation Allopatric Sympatric Physiological
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If two populations of a single species become geographically separated, over time they may diverge into separate species by __________
Allopatric |
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Sympatric |
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Physiological |
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- Which of the following statements about sympatric speciation is correct? It is a process through which two populations can diverge and develop reproductive isolation while in two different geographic area. It is the most common mechanism for populations to form independent species. Postzygotic isolation is the main form of reproductive isolation for the sympatric speciation process. Genetic isolation through large scale chromosomal mutations, such as chromosome inversion or polyploidy, are more likely contributing to sympatric speciation. None of the abovetwo populations of a single species become geographically separated, over time they may diverge into sep © Allopatric Sympatric Physiological © All of the aboveGive examples on the reproductive isolating mechanisms (geographical isolation, behavioral isolation, mechanical isolation, gametic isolation, temporal or seasonal isolation) Note: example in the activity is in the photo attached
- A ring species is composed by populations arranged in a circle around a barrier with one boundary characterized by reproductive isolation. It is an example of: ORIGINAL POPULATION GENE FLOW FAILURE TO REPRODUCE GEOGRAPHIC BARRIER Allopatric speciation Sympatric speciation Ecological speciation Isolation by distanceThe first step in speciation is an interruption in ____________________true or false, Sexual selection may lead to sympatric speciation
- Vertical 11 1. Involves the formation of new species from pre-existing species. 8 3. Group of organisms that are capable of producing viable and fertile offspring 5. A mechanism that keeps species from mating with other. 7. it means "beside" 13 9. offspring of parents that differ in genetically determined traits. 12 11. Incapable of producing offspring 13. In temporal or seasonal isolation the reproduction is prevented by 10 15 14 Horlzontal 2. The role or the organism in the environment 4. It means "Place" 6. _itself is not only the mechanism of change overtime but it reduce the gene flow 8. Prevents the Fertilization of the eggs 10. An isolation wherein there's a differences in reproductive organs prevent successful Interbreeding. 12. It means "near" 14. Prevents the formation of fertile offspring 15. Formation of new species from the hybridization of 2 different speciesTwo species of frogs belonging to the same genus occasionally mate. Fertilization occurs, but the offspring fail to develop and hatch. Which reproductive isolating mechanism is acting to keep the two frog species separate? Group of answer choices hybrid inviability prevention of gamete fusion mechanical isolation behavioral isolation temporal isolationIndicate the order in which the following steps would take place to result in Allopatric Speciation [enter 1 for the first step, 2 for the second, etc; write only the number -- no words, no spaces] The two groups develop reproductive isolating mechanisms so that they no longer interbreed. Interbreeding populations connected via gene flow occur across a range. The two separate groups adapt to their new environments. Some sort of physical barrier develops to split the once contiguous population(s) into two separate groups If they come back together, any hybrids formed are less fit.
- An inherited characteristic that increases an organism's ability to survive and reproduce in its specific environment is called a/an analagous structure adaptation speciation vestigial structure 0000Indicate the order in which the following steps would take place to result in Sympatric Speciation [enter 1 for the first step, 2 for the second, etc; write only the number -- no words, no spaces] As they adapt to their specific environments, the fitness of any hybrid formed is reduced. Reproductive isolating mechanisms are selected for so that less fit hybrids are not formed. Two species now exist. Interbreeding populations connected via gene flow occur across a range. The populations in the new environment adapt to their particular circumstances while the remainder stay as they were. Something happens so that some members of the populations/species change their environment (shift hosts; have a genetic change like polyploidy or inversions), so that they are separated from the others even thought hey are living in the same area.Of the following species concept, which one emphasizes reproductive isolation as the major cause for speciation? Phylogenetic species concept Morphological species concept Biological species concept Evolutionary species concept