BIOLOGY
5th Edition
ISBN: 9781265202859
Author: BROOKER
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Chapter 24, Problem 2CQ
What are the key differences between gradualism and punctuated equilibrium? How are genetic changes related to these two models?
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What is the key difference between prezygotic and postzygotic isolating mechanisms? Give an example of each type. Which type is more costly from the perspective of energy?
How do nonrandom mating and gene flow disrupt Hardy– Weinberg equilibrium?
Which of the following is NOT considered a genetic isolating mechanism?
Question 2 options:
a)
Seasonal isolation
b)
Habitat preference
c)
Behavioral isolation
d)
A, B, and C are all genetic isolating mechanisms.
Chapter 24 Solutions
BIOLOGY
Ch. 24.1 - Can you think of another example of two different...Ch. 24.1 - Prob. 1CSCh. 24.1 - Is temporal isolation an example of a prezygotic...Ch. 24.1 - Prob. 3CCCh. 24.2 - Prob. 1CSCh. 24.2 - Prob. 1EQCh. 24.2 - Prob. 2EQCh. 24.2 - Prob. 3EQCh. 24.2 - Prob. 1CCCh. 24.2 - Prob. 2CC
Ch. 24.4 - Evo-Devo: Evolutionary Developmental Biology...Ch. 24.4 - Prob. 1CSCh. 24.4 - Prob. 2CCCh. 24 - Macroevolution refers to evolutionary changes that...Ch. 24 - Prob. 2TYCh. 24 - Prob. 3TYCh. 24 - Prob. 4TYCh. 24 - Prob. 5TYCh. 24 - Prob. 6TYCh. 24 - Prob. 7TYCh. 24 - Prob. 8TYCh. 24 - Prob. 9TYCh. 24 - Prob. 10TYCh. 24 - What is the key difference between prezygotic and...Ch. 24 - What are the key differences between gradualism...Ch. 24 - Prob. 3CQCh. 24 - Prob. 1COQCh. 24 - Discuss the type of speciation (allopatric or...
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- Why might captive-breeding programs that reintroduce species into natural environments fail?arrow_forwardWhat is the basic difference between the allopatric and sympatric modes of speciation?arrow_forwardWhat is the difference between prezygotic and postzygotic reproductive isolating mechanisms? List some different types of each.arrow_forward
- Anisogamy is the term for sexual dimorphism in gamete size. a) Discuss the evolution of anisogamy from an ancestor in which gametes had equal size. What factors would lead to a divergence in gamete size among members of a population? b) Sexual selection can be strong in some species, and weaker in others. What determines the strength of sexual selection for a certain species? Discuss the differences in sex roles and Bateman’s Principle in your answer.arrow_forwardWhat does the Hardy Weinberg equation do? A) Show if a population is evolving B) Shows how many dominant alleles there are C) Does not work with asexual reproductionarrow_forwardHow does bottleneck effect relate to the founder effect? is the founder effect a consequence of the bottleneck effect?arrow_forward
- What is the 50-500 rule? What does each of these numbers represent? With what mechanism of evolutionary change (of the five Hardy-Weinberg assumptions) does this rule primarily deal? What other major field of study uses this rule and why?arrow_forward1) 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_forwardHow does the soapberry bug differ in Central Florida from the ones found in South Florida? What do you think caused these changes? Why? Is there an agent for selection?arrow_forward
- How do reproductive isolating mechanisms lead to speciation?arrow_forwardWhat is Darwinian fitness? What types of characteristics canpromote high fitness values? Give several examples.arrow_forward21) ALL BUT ONE of the statements below helps to describe gene flow. That is A) B) Without genetic variation, some of the basic mechanisms of evolutionary change cannot operate. There are three primary sources of genetic variation: 1. Mutations II. Gene flow III. Sexual reproduction D) It depends on a chance event that changes the gene pool. It can reduce the genetic differentiation between the two groups. It involves the movement of alleles from one population to another. It includes migration or the movement of individuals between populations. Some mutations always occur from generation to generation. But most mutations do not persist over time in the gene pool. Which mutation is MOST likely to become established and persist in a species?arrow_forward
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