Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Chapter 53.1, Problem 2CC
Summary Introduction
To construct: A life table for various populations of the Belding's ground squirrels.
Concept introduction: Demography: is referred as the study of a population's vital statistics like the migration rates, death and birth rates. It is also responsible for studying the changes with respect to time that occurs in the vital statistics. Therefore, for summarizing the information (demographic) life table is important to be made.
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Q6.9. A dwindling population of 1000 frogs occupies an isolated area in Costa Rica. To help
preserve the species, scientists caught 20 frogs to start a new population in a nearby area. This
species has a gene that affects eye shape. The 1000-member wild population has two alleles for
this gene: R and r, with frequencies 0.7 and 0.3, respectively. What will be the allele frequencies
of R and r in the 20-member founder population?
The frequencies will be 0.7 for R and 0.3 for r.
The frequencies will be 1.0 for R and 0 for r.
The expected frequencies are 0.7 for R and 0.3 for r. The actual frequencies could be different.
The founder populations's allele frequencies will necessarily be different than the source
population's frequencies.
Activity 13.3: Complete the table.
Directions: Explain and give example for each type of reproductive isolating
mechanisms.
Pre-zygotic
Reproductive
Isolating
Mechanisms
Explanation
Еxample
Habitat Isolation
Behavioral Isolation
Post-zygotic
Reproductive
Isolating
Mechanisms
Explanation
Еxample
Hybrid inviability
Hybrid breakdown
JNGSO
Need help with 1 and 2 questions:
1. Which of the following statements about the stationary phase is correct?
A.) The birth rate equals the emigration rate.
B.) The death rate equals the immigration rate
C.) The birth rate equals the death rate
D.) The emigration rate equals the immigration rate
2.) Life strategies of various populations can be represented by the symbols and K. Which of the following is not a characteristic of an r-selected population?
A.) Its growth rate is unpredictable
B.) The organisms have a short life span
C.) It rarely exceeds the carrying capacity of its environment
D.) The death rate of the population is very high
Chapter 53 Solutions
Campbell Biology
Ch. 53.1 - DRAW IT Each female of a particular fish species...Ch. 53.1 - Prob. 2CCCh. 53.1 - Prob. 3CCCh. 53.2 - Explain why a constant per capita rate of growth...Ch. 53.2 - Prob. 2CCCh. 53.2 - Prob. 3CCCh. 53.3 - Explain why a population that fits the logistic...Ch. 53.3 - WHAT IF? Given the latitudinal differences in...Ch. 53.3 - Prob. 3CCCh. 53.4 - Identify three key life history traits, and give...
Ch. 53.4 - Prob. 2CCCh. 53.4 - Prob. 3CCCh. 53.5 - Prob. 1CCCh. 53.5 - Prob. 2CCCh. 53.5 - WHAT IF? Suppose you were studying a species that...Ch. 53.5 - Prob. 4CCCh. 53.6 - How does a human population's age structure affect...Ch. 53.6 - How have the rate and number of people added to...Ch. 53.6 - WHAT IF? Type "personal ecological footprint...Ch. 53 - Gray whales (Eschrichtius robustus) gather each...Ch. 53 - Suppose one population has an r that is twice as...Ch. 53 - Prob. 53.3CRCh. 53 - Prob. 53.4CRCh. 53 - Density-dependent factors regulate population...Ch. 53 - The human population is no longer growing...Ch. 53 - Population ecologists follow the fate of same-age...Ch. 53 - A population's carrying capacity (A) may change as...Ch. 53 - Scientific study of the population cycles of the...Ch. 53 - Analyzing ecological footprints reveals that (A)...Ch. 53 - Based on current growth rates, Earth's human...Ch. 53 - The observation that members of a population are...Ch. 53 - According to the logistic growth equation...Ch. 53 - During exponential growth, a population always (A)...Ch. 53 - Prob. 9TYUCh. 53 - Prob. 10TYUCh. 53 - EVOLUTION CONNECTION Contrast the selective...Ch. 53 - Prob. 12TYUCh. 53 - Prob. 13TYUCh. 53 - WRITE ABOUT A THEME: INTERACTIONS In a short essay...Ch. 53 - SYNTHESIZE YOUR KNOWLEDGE Locusts (grasshoppers in...
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