Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 1, Problem 15TYK
Apply Evolutionary Thinking When a biologist first tested a new pesticide on a population of insects, she found that only 1% of the insects survived their exposure to the poison. She allowed the survivors to reproduce and discovered that 10% of the offspring survived exposure to the same concentration of pesticide. One generation later, 50% of the insects survived this experimental treatment. What is a likely explanation for the increasing survival rate of these insects over time?
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Some animals in captivity have reproduced without the need for a mate in a process called parthenogenesis. Examples include boas, pythons, bonnethead sharks, and komodo dragons. Initially, scientists thought this occurred because the animals were kept in optimal conditions for reproduction, but lacked access to a mate. However, scientists were surprised to discover that some species in the wild with access to mates also reproduce through parthenogenesis. An example is the pit-viper. Compare and contrast the processes of asexual reproduction through parthenogenesis and sexual reproduction for an animal such as the python.
Describe the processes of
i. asexual reproduction through parthenogenesis ii. sexual reproduction
2. Describe two pros and two cons of each form of reproduction. Explain each one.
Reproduction is important because _____.
A) it pass on genes adapted genes to future generation ensuring survival
B) it maximizes individuals survival
C) it is the key for individuals success
D) life is nothing without sex
You are examining a population of C. elegans in their natural habitat, a fresh steaming pile of nutrient-rich compost. Predict what you might expect to see in terms of mode of reproduction in the population.
a.
The population will primarily reproduce asexually then when they run out of nutrient-rich compost.
b.
The population will have mostly hermaphrodites with a few males.
c.
The population will have a really high frequency of males compared to lab conditions.
d.
The population will primarily undergo sexual reproduction.
Chapter 1 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 1.1 - Prob. 1SBCh. 1.1 - What do living organisms do with the energy they...Ch. 1.1 - What is a life cycle?Ch. 1.2 - What is the difference between artificial...Ch. 1.2 - How do random changes in the structure of DNA...Ch. 1.2 - Prob. 3SBCh. 1.3 - What is a major difference between prokaryotic and...Ch. 1.3 - Prob. 2SBCh. 1.3 - Prob. 3SBCh. 1.4 - In your own words, explain the most important...
Ch. 1.4 - What information did the copper lizard models...Ch. 1.4 - Prob. 3SBCh. 1 - What is the lowest level of biological...Ch. 1 - Which category falls immediately below class in...Ch. 1 - Houseflies develop through a series of programmed...Ch. 1 - Which structure allows living organisms to detect...Ch. 1 - Prob. 5TYKCh. 1 - Prob. 6TYKCh. 1 - Which of the following represents the application...Ch. 1 - Which of the following is not a component of...Ch. 1 - Which of the following questions best exemplifies...Ch. 1 - When researchers say that a scientific hypothesis...Ch. 1 - Prob. 11TYKCh. 1 - What role did the copper lizard models play in the...Ch. 1 - Prob. 13TYKCh. 1 - Prob. 14TYKCh. 1 - Apply Evolutionary Thinking When a biologist first...Ch. 1 - Prob. 1ITD
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