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Decide which examples are most likely to increase variation or decrease variation. Some examples could do both. Which of the following could possibly increase genetic variation indirectly? toxins predator-prey relationships competition new habitat disasters increased food supply

Decide which examples are most likely to increase variation or decrease variation. Some examples could do both. Which of the following could possibly increase genetic variation indirectly? toxins predator-prey relationships competition new habitat disasters increased food supply

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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### Understanding Factors Influencing Genetic Variation **Task:** Decide which examples are most likely to increase or decrease variation. Some examples could do both. **Question:** Which of the following could possibly increase genetic variation indirectly? - [ ] toxins - [ ] predator-prey relationships - [ ] competition - [ ] new habitat - [ ] disasters - [ ] increased food supply ### Explanation: Genetic variation is essential for the adaptability and survival of species. Factors that influence genetic variation can either increase or decrease the diversity within a population. Consider the following scenarios and how they might indirectly affect genetic variation: 1. **Toxins**: Exposure to toxins can impact genetic variation by causing mutations that either introduce new genetic traits or reduce the population’s genetic diversity due to increased mortality. 2. **Predator-Prey Relationships**: These relationships can drive evolutionary changes, promoting traits that enable better survival and, hence, increase genetic variation. 3. **Competition**: Competition between individuals or species can lead to the development of unique adaptive traits, thus potentially increasing genetic diversity. 4. **New Habitat**: Movement to a new habitat introduces a population to different environmental pressures, likely fostering new adaptations and increasing genetic variation. 5. **Disasters**: Natural disasters can drastically reduce population size (a bottleneck effect), reducing genetic diversity. However, the subsequent survival and reproduction of the fittest can also lead to new genetic combinations. 6. **Increased Food Supply**: An abundance of food reduces competition, potentially allowing for a more diverse range of genetic traits to proliferate without as much selective pressure. Consider these factors carefully and decide which are most likely to cause significant changes in genetic variation.
Transcribed Image Text:### Understanding Factors Influencing Genetic Variation **Task:** Decide which examples are most likely to increase or decrease variation. Some examples could do both. **Question:** Which of the following could possibly increase genetic variation indirectly? - [ ] toxins - [ ] predator-prey relationships - [ ] competition - [ ] new habitat - [ ] disasters - [ ] increased food supply ### Explanation: Genetic variation is essential for the adaptability and survival of species. Factors that influence genetic variation can either increase or decrease the diversity within a population. Consider the following scenarios and how they might indirectly affect genetic variation: 1. **Toxins**: Exposure to toxins can impact genetic variation by causing mutations that either introduce new genetic traits or reduce the population’s genetic diversity due to increased mortality. 2. **Predator-Prey Relationships**: These relationships can drive evolutionary changes, promoting traits that enable better survival and, hence, increase genetic variation. 3. **Competition**: Competition between individuals or species can lead to the development of unique adaptive traits, thus potentially increasing genetic diversity. 4. **New Habitat**: Movement to a new habitat introduces a population to different environmental pressures, likely fostering new adaptations and increasing genetic variation. 5. **Disasters**: Natural disasters can drastically reduce population size (a bottleneck effect), reducing genetic diversity. However, the subsequent survival and reproduction of the fittest can also lead to new genetic combinations. 6. **Increased Food Supply**: An abundance of food reduces competition, potentially allowing for a more diverse range of genetic traits to proliferate without as much selective pressure. Consider these factors carefully and decide which are most likely to cause significant changes in genetic variation.
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