A group of migratory birds returns to the same small area of the forest and begins mating earlier and earlier in the spring compared to other individuals living in the same country. Over me, this may result in Multiple Choice sympatric speciation polyploidy hybridization allopatric speciation

A group of migratory birds returns to the same small area of the forest and begins mating earlier and earlier in the spring compared to other individuals living in the same country. Over me, this may result in Multiple Choice sympatric speciation polyploidy hybridization allopatric speciation

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter12: Processes Of Evolution

Section: Chapter Questions

Problem 8SQ

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Concept explainers

Evolutionary lineages

An evolutionary lineage is a series of populations of organisms that descend from a common ancestor. Each species in the lineage is the direct consequence of evolutionary change from a common ancestor. A phylogenetic tree is generally used to display lineages visually. Lineages are components of the phylogenetic tree of life. Molecular systematics procedures are widely used to predict lineages.

Question

A group of migratory birds returns to the same small area of the forest and begins mating earlier and earlier in the spring compared to other individuals living in the same country. Over
time, this may result in
Multiple Choice
sympatric speciation
polyploidy
hybridization
allopatric speciation
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Within a population of sunflowers, a new individual has a novel dominant mutation that causes it to flower 4 months earlier than the rest of the population. That sunflower survives and successfully self-fertilizes, leading over time to a novel population that evolves larger leaves and smaller flowers. This new population does not interbreed with the original population, although they are found in the same areas. This is an example of Allopolyploid speciation O Behavioral isolation O Allopatric speciation O Sympatric speciation O Adaptive radiation
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 above
Speciation Producing offspring that is infertile is a barrier to reproduction. O postzygotic O prezygotic
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The difference between sympatric and parapatric speciation is ___. a. parapatric speciation occurs only in worms b. sympatric speciation requires a barrier to gene flow c. the extent of overlap in range d. reproductive isolation does not occur
A limitation to the biological species concept is based on the ability to interbreed so can't be used to determine species with asexual reproduction like bacteria and some plants. O True False
two populations of a single species become geographically separated, over time they may diverge into sep © Allopatric Sympatric Physiological © All of the above
Indicate 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.
Indicate 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.
Which of the following is most likely seen in hybrid zones where reinforcement is occurring? the genetic distinctness of two gene pools is low increased gene flow O speciation hybrid sterility O a narrow hybrid zone
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