Biology: Life on Earth
10th Edition
ISBN: 9780321729712
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: Benjamin Cummings
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Chapter 16, Problem 2AC
A biologist you've met claims that the fact that humans are pushing other species into small, isolated populations is good for biodiversity because these are the conditions that lead to new
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What is Allopatric speciation?
A) When a population is separated from the main group by a barrier and becomes a new species
B) When a population mutates into a new species
C) When a population develops into a new species without any physical barriers to isolate them
Choose which evolutionary mechanism is most likely to cause speciation events. founder effect gene flow mutation natural selection non-random mating
Speciation can occur when two populations of a species become separated from each other. What is the best explanation for why speciation occurs?
Chapter 16 Solutions
Biology: Life on Earth
Ch. 16 - 1. A species is a group of _________ that evolves...Ch. 16 - 2. Fill in the following with the appropriate...Ch. 16 - 3. Formation of a new species occurs when two...Ch. 16 - Prob. 4FTBCh. 16 - Prob. 5FTBCh. 16 - Define the following terms: species, speciation,...Ch. 16 - Review the material on the possibility of...Ch. 16 - Many of the oak tree species in central and...Ch. 16 - 4. A drug called colchicine prevents cell division...Ch. 16 - What are the two major types of reproductive...
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- The average speciation rate minus the average extinction rate is which of the following? a. Mode of evolution b. Net diversification rate c. Tempo of evolution d. Speciation with gene flowarrow_forwardmountain range separates a population of gorillas. After many generations, the gorillas on different sides of the mountain range cannot produce viable, fertile offspring. What has happened? a. Sympatric speciation c. Parapatric speciation b. Allopatric speciation d. Adaptive radiationarrow_forwardWhat is Speciation? A) Movement of a population from one area to another B) Becoming part of an adopted species C) Creation of a new speciesarrow_forward
- What is Sympatric speciation? A) When a population is separated from the main group by a barrier and becomes a new species B) When a population mutates into a new species C) When a population develops into a new species without any physical barriers to isolate themarrow_forwardIn your own words, describe why the orange beetles survived in relationship to what you have learned about natural selection.arrow_forwardYour classmate is confused about the difference between allopatric and sympatric speciation. Briefly explain how you would help your classmate understand the difference.arrow_forward
- The first step leading to allopatric speciation is (a) hybrid inviability (b) hybrid breakdown (c) adaptive radiation (d) geographic isolation (e) paedomorphosisarrow_forwardIn _____________, new species of a lineage move into a wide range of habitats by way of bursts of microevolutionary events. a. an adaptive radiation b. natural selection c. genetic drift d. punctuated equilibriumarrow_forwardWhich situation would most likely lead to allopatric speciation? a. A flood causes the formation of a new lake. b. A storm causes several large trees to fall down. c. A mutation causes a new trait to develop. d. An injury causes an organism to seek out a new food source.arrow_forward
- Which term can most accurately be used to describe evolutionary change that leads to speciation? A. microevolution b. macroevolution c. sexual selection d. natural selection e. reproductive isolationarrow_forwardSpeciation on islands is influenced by a) island gigantism b) adaptive evolution c) variation in species d) reproductive successarrow_forwardWhat is the relationship of Natural Selection and Speciation? Answer in no less than 10 sentencesarrow_forward
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