Which of the following terms best describes the biological scenario where species that look similar in allopatry look different in sympatry? a. Character displacement b. Tempo c. Fusion d. Post-zygotic barriers
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Which of the following terms best describes the biological scenario where species that look similar in allopatry look different in sympatry?
| a. |
Character displacement |
|
| b. |
Tempo |
|
| c. |
Fusion |
|
| d. |
Post-zygotic barriers |
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- Which of the following situations has revealed that mutualistic interactions can evolve from prior parasitic relationships? A. Yucca plants are pollinated only by moths of the genus Tegeticula; however, some of the moth species 'cheat" by laying eggs on seeds without pollinating the plant. B. Large-sized lice of the genus Columbicola tended to live on larger species of pigeons. Body size matching had a significant effect on the ability of lice to escape defensive preening by the host bird. C. The nonvenomous yellow-eyed salamander has the same coloration as the toxic California newt. Related nontoxic salamanders which do not mimic the newts are prone to attacks by predators. D. Glochidion trees and Epicephala moths are in an obligate mutualism with each other. Significant cospeciation led to an increase in diversity of the two species.Identify each of the following reproductive barriers as prezygotic or postzygotic. a. One lilac species lives on acidic soil, another on basic soil. b. Mallard and pintail ducks mate at different times of the year. c. Two species of leopard frogs have different mating calls. d. Hybrid offspring of two species of jimsonweed always die before reproducing. e. Pollen of one kind of pine tree cannot fertilize another kind.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
- Which of the following traits is more associated with an Opportunistic (Equilibrial) species? Which of the following traits is more associated with an Opportunistic (Equilibrial) species? A. Short maturation time B. Producing offspring at many different times over the course of life C. Producing a lot of eggs at one time D. High juvenile mortality E. High level of parental careWhich of the following factors makes species recognition receptors on the sea urchin egg membrane important? Group of answer choices a. high levels of sexual selection b. external fertilization c. carnivorous larvae d. type III survivorship curve e. cytoplasmic determinantsWhich of the following is associated with the reproductive potential of a species? a. few offspring b. many offspring c. semelparity d. fecundity
- Assume you are studying two species of lizard that occur in sympatry. In allopatry, Lizard Species A is dark brown but in sympatry is black in color. In allopatry, Lizard Species B is brown but in sympatry is light brown. This example is best described as which of the following? a. Postzygotic Isolation b. Character displacement c. Sympatric speciation d. Genetic incompatibility e. HybridizationWhich statement about zero population growth isoclines of two competing species is true? A. Species coexistence requires that the two isoclines cross. B. The crossing of the two isoclines is a sufficient condition for species coexistence. C. If the species coexist, they will each do so at a higher density than either would if placed alone. D. Strongly competing species can only coexist if the two species have very different carrying capacities. E. Coexistence will occur if the two isoclines are parallel.In a hybrid zone, reinforcement often prevents which of the following? a. Fusion b. Incipient species c. Secondary contact d. Hybrid infertility
- Species that have many offspring at one time are usually:a. r-selectedb. K-selectedc. both r- and K-selectedd. not selectedIf two salamanders from different species cannot mate because one mates in spring and the other in fall, this is what kind of isolation? Group of answer choices A. behavioral B. mechanical C. habitat D. temporal E. gameticThe physical surroundings in which a species is normally found is its A. Community B. Habitat C. Home range D. Niche