CONNECT ACCESS FOR BIOL 01204 <C>
12th Edition
ISBN: 9781264443123
Author: Raven
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Textbook Question
Chapter 22.1, Problem 3LO
Describe the relationship of reproductive isolating mechanisms to the biological species concept.
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briefly explain why there is species variation?
Describe the two kinds of reproductive isolating mechanisms and explain their role in speciation.
Differentiate between how prezygotic and postzygotic isolating mechanisms lead to reproductive isolation.
Chapter 22 Solutions
CONNECT ACCESS FOR BIOL 01204 <C>
Ch. 22.1 - Understand the biological species concept and why...Ch. 22.1 - Define the two kinds of reproductive isolating...Ch. 22.1 - Describe the relationship of reproductive...Ch. 22.2 - Prob. 1LOCh. 22.2 - Prob. 2LOCh. 22.3 - Prob. 1LOCh. 22.3 - Prob. 2LOCh. 22.4 - Compare and contrast sympatric and allopatric...Ch. 22.4 - Prob. 2LOCh. 22.5 - Prob. 1LO
Ch. 22.5 - Prob. 2LOCh. 22.6 - Prob. 1LOCh. 22.6 - Prob. 2LOCh. 22.7 - Prob. 1LOCh. 22.7 - Prob. 2LOCh. 22 - Prob. 1IQCh. 22 - Prob. 2IQCh. 22 - Prezygotic isolating mechanisms include all of the...Ch. 22 - Reproductive isolation is a. a result of...Ch. 22 - Problems with the biological species concept...Ch. 22 - Prob. 4UCh. 22 - Prob. 5UCh. 22 - Prezygotic isolation a. always involves mechanisms...Ch. 22 - Speciation by allopolyploidy a. takes a long time....Ch. 22 - Adaptive radiation a. is the result of enriched...Ch. 22 - Prob. 9UCh. 22 - Character displacement a. arises through...Ch. 22 - Prob. 11UCh. 22 - If reinforcement is weak and hybrids are not...Ch. 22 - Natural selection can a. enhance the probability...Ch. 22 - Hybridization between incompletely isolated...Ch. 22 - Natural selection can lead to speciation a. by...Ch. 22 - Natural selection can lead to the evolution of...Ch. 22 - Prob. 2SCh. 22 - Refer to figure 22 6 In Texas. Drummond s phlox is...Ch. 22 - Refer to figure 22.16. Geospiza fuliginosa and...
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- Explain why parapatric speciation is more likely to occur in sedentary organismsarrow_forwardExplain the significance of reproductive isolating mechanisms and distinguish among the various prezygotic and postzygotic barriers.arrow_forwardDistinguish between prezygotic and postzygotic isolating mechanisms, and provide an example of each.arrow_forward
- Describe the steps involved in allopatric speciation.arrow_forwardRank the following in order from most general to most specific: 1. game tic isolation 2 reproductive isolating mechanism 3. sperm-egg incompatibility in sea urchins 4. prezygotic isolating mechanism O2, 3, 1, 4 O2, 4, 1, 3 O4, 1, 2, 3 O4, 2, 1, 3 EJarrow_forwardDefine allopatric speciation and provide a hypothetical situation through which it could occur.arrow_forward
- 1) Many organisms have the ability to reproduce asexually as well as perform sexual reproduction. A Scientist, John Smith, was conducting research on aphids that can undergo both methods of reproduction. He determined the males in his population had fertilization rate of 1.8 and a relative fitness of outcrossed offspring was 1.1. a) What is the equilibrium frequency of males in this population? b) Is this population stable equilibrium and why?arrow_forwardDescribe two mechanisms that can decrease gene flowin sympatric populations, thereby making sympatricspeciation more likely to occur.arrow_forwardDefine co-speciationarrow_forward
- We considered the sympatric evolution of reproductive isolating mechanisms in host races of Rhagoletis pomonella, the apple maggot fly. The wasp Diachasma alloeum parasitizes apple maggot flies, laying its eggs on the larvae of the flies. Immature wasps hatch from the eggs and feed on the fly larvae. Research by Andrew Forbes and his colleagues (Forbes et al. 2009. Science 323:776–779) demonstrated that wasps that parasitize the apple race of R. pomonella are genetically differentiated from those that parasitize the hawthorn race. They also found that wasps that prey on the apple race of the flies are attracted to odors from apples, whereas wasps that prey on the hawthorn race are attracted to odors from hawthorn fruits. Propose an explanation for how genetic differences might have evolved between the wasps that parasitize the two host races of R. pomonella. How might these differences lead to speciation in the wasps?arrow_forwardDescribe how dispersal between populations can affect gene flow.arrow_forwardThe reproductive isolating mechanism in which two closely related species live in the same geographic area but reproduce at different times is (a) temporal isolation (b) behavioral isolation (c) mechanical isolation (d) gametic isolation (e) hybrid inviabilityarrow_forward
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