Evolution
4th Edition
ISBN: 9781605356051
Author: Douglas Futuyma, Mark Kirkpatrick
Publisher: SINAUER
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Chapter 11, Problem 5PDT
Summary Introduction
To determine: The reason that shrimps evolve in response to the selective removal of largest and oldest individuals in their populations.
Introduction: During their life cycle, shrimps of the genus Pandalus mature as males but change into females late in the life. These shrimps are usually fished with nets to capture large size individuals.
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What does the term evolution mean?
A.
The characteristics of species become more complex over time.
B.
The strongest individuals produce the most offspring.
C.
The characteristics of an individual change through the course of its life, in response to natural selection.
D.
The characteristics of populations change through time.
Tawilis is a freshwater sardine endemic only in the Taal Lake in Batangas province. After several eruptions of the Taal volcano in the 21st century, the sardine population mentioned above rapidly dropped up to 82%. What best describe this scenario?
a. mutation
b. migration
c. natural selection
d. genetic drift
Black-footed ferrets are an endangered weasel found in the Great Plains. If fire swept through the plains and only a few members of a population survive (lowering the gene pool) , what did they experience?
a.Bottleneck Effect
B.Founder Effect
C.Mutation
D.Natural Selection
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- True or False a.) Evolution creates genetic variation in a population. b.) Fitness refers to an allele's ability to help the organism evade predators. c.) The process of natural selection may increase or decrease the frequency of a particular allele in the population depending on the environment. d.) A potato species acquires a mutation in its catalasegene that allows it to function in very cold environments. However, this catalaseis denatured at room temperature. This is a good example of fitness cost.arrow_forwardAfter the mass extinction that occurred 65 million years ago, mammals rapidly diversified to occupy habitats that were previously unavailable to them. What concept does this illustrate? A. Adaptive radiation B. Cretaceous selection C. Reproductive isolationD. Heterozygote advantagearrow_forwardNatural selection makes an adaptive trait more common in a population. After many generations, will all individuals in the population have the same adaptive trait?arrow_forward
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