Podcast
Questions and Answers
What is the process called that involves the movement of genes from one population to another?
What is the process called that involves the movement of genes from one population to another?
Which term describes the occurrence where a small group colonizes a new area and establishes a population with a gene pool different from the original?
Which term describes the occurrence where a small group colonizes a new area and establishes a population with a gene pool different from the original?
What occurs when a random event significantly reduces the size of a population, affecting its genetic diversity?
What occurs when a random event significantly reduces the size of a population, affecting its genetic diversity?
In the context of natural selection, what is meant by 'fitness'?
In the context of natural selection, what is meant by 'fitness'?
Signup and view all the answers
What effect might random genetic drift have on a population over generations?
What effect might random genetic drift have on a population over generations?
Signup and view all the answers
Which of the following is a component of fitness in the context of evolutionary biology?
Which of the following is a component of fitness in the context of evolutionary biology?
Signup and view all the answers
Which statement about genetic drift is true?
Which statement about genetic drift is true?
Signup and view all the answers
What is necessary for evolution to occur?
What is necessary for evolution to occur?
Signup and view all the answers
What impact does gene flow have on a population's genetic structure?
What impact does gene flow have on a population's genetic structure?
Signup and view all the answers
Which of the following best describes the process of biological magnification?
Which of the following best describes the process of biological magnification?
Signup and view all the answers
Which of the following factors is NOT considered a selective force in evolution?
Which of the following factors is NOT considered a selective force in evolution?
Signup and view all the answers
In the context of evolution, what does the term 'gene flow' refer to?
In the context of evolution, what does the term 'gene flow' refer to?
Signup and view all the answers
Which of the following statements about random mutation is true?
Which of the following statements about random mutation is true?
Signup and view all the answers
What is likely to occur if there is no genetic variation within a population?
What is likely to occur if there is no genetic variation within a population?
Signup and view all the answers
Which of the following best describes genetic drift?
Which of the following best describes genetic drift?
Signup and view all the answers
What role do selective forces play in evolution?
What role do selective forces play in evolution?
Signup and view all the answers
What determines the fitness of an organism in a specific environment?
What determines the fitness of an organism in a specific environment?
Signup and view all the answers
How does biological magnification affect toxic chemicals in a food chain?
How does biological magnification affect toxic chemicals in a food chain?
Signup and view all the answers
What is an example of an adaptation that can confer survival advantages in a changed environment?
What is an example of an adaptation that can confer survival advantages in a changed environment?
Signup and view all the answers
What is a fundamental requirement for natural selection to occur?
What is a fundamental requirement for natural selection to occur?
Signup and view all the answers
What role does the environment play in the process of natural selection?
What role does the environment play in the process of natural selection?
Signup and view all the answers
In the example of peppered moths, what primarily influenced survival and reproduction?
In the example of peppered moths, what primarily influenced survival and reproduction?
Signup and view all the answers
What occurs during co-evolution between two species?
What occurs during co-evolution between two species?
Signup and view all the answers
What outcome is expected if a population of organisms faces a sudden change in their environment?
What outcome is expected if a population of organisms faces a sudden change in their environment?
Signup and view all the answers
What is the primary advantage provided by the red variant of the Glutathione S transferase (GSTe2) gene in mosquitoes?
What is the primary advantage provided by the red variant of the Glutathione S transferase (GSTe2) gene in mosquitoes?
Signup and view all the answers
Which factor is NOT mentioned as a consideration for assessing the sustainability of using mesocyclops for pest control?
Which factor is NOT mentioned as a consideration for assessing the sustainability of using mesocyclops for pest control?
Signup and view all the answers
When evaluating mesocyclops as natural pest control, which effect should be considered regarding ecosystem health?
When evaluating mesocyclops as natural pest control, which effect should be considered regarding ecosystem health?
Signup and view all the answers
Which logistical consideration is important for the use of mesocyclops in pest control?
Which logistical consideration is important for the use of mesocyclops in pest control?
Signup and view all the answers
What potential health concern is associated with the use of mesocyclops in natural pest control?
What potential health concern is associated with the use of mesocyclops in natural pest control?
Signup and view all the answers
In considering the social implications of using mesocyclops for pest control, which aspect is important?
In considering the social implications of using mesocyclops for pest control, which aspect is important?
Signup and view all the answers
What is one of the environmental concerns when using mesocyclops for pest control?
What is one of the environmental concerns when using mesocyclops for pest control?
Signup and view all the answers
Why is it essential to control the population of mesocyclops when used for pest control?
Why is it essential to control the population of mesocyclops when used for pest control?
Signup and view all the answers
Study Notes
SC253: Ecology and Environmental Problems
- Course was held October 28, 2024, by Professor Amy L. Frick.
- Agenda included panel discussions, a lecture on evolution, the biological magnification case study "The Day They Parachuted Cats into Borneo," and a group activity on mesocyclops.
Housekeeping
- Ecological footprint essay due October 21. Late submissions accepted.
- Students will give a 20-minute panel presentation on either November 18th or 25th. Subjects are randomly assigned.
- On the non-presenting day, students conduct a peer review of a classmate's presentation.
- Students with extenuating circumstances can request a different presentation date. If they do not notify the instructor by November 4, they have lost the option.
- Students who miss their presentation without properly notifying the instructor will receive a grade of 0 and will not have the chance to redo the assignment.
Schedule
- October 28: Evolution, biological magnification, mesocyclops.
- November 4: Carbon, climate change.
- November 11: Water, nitrogen.
- November 18: Presentations, Day 1.
- November 25: Presentations, Day 2.
- December 2: Final exam.
- December 9: No class meeting; last day for submission of overdue assignments.
Topic: "Cats are better than dogs" - Panel Discussion Structure
- 1. Introduction (1-2 minutes): Introduce the topic, its significance, and define terms.
- 2. Pro (Cats): State your position and give evidence. (4-5 minutes)
- 3. Con (Dogs): Give counter-arguments with evidence. (4-5 minutes)
- 4. Pro (Cats - Rebuttal): Respond to Con arguments, analyze and offer your input. (2-3 minutes)
- 5. Con (Dogs - Rebuttal): Respond to Pro's rebuttal (optional). Summarize your viewpoint (2-3 minutes).
- 6. Q&A: Be ready to discuss your position on the assigned topic.
Evolution
- Evolution is the change in gene frequency from one generation to the next.
- Selective forces include random mutation, gene flow, genetic drift, and natural selection.
- No variation leads to no evolution.
- Additional examples are Founder effect, and Bottleneck effect.
- Natural Selection requires variation, and an environment that favors a trait based on favorable conditions.
- Example of adaptation: Having pointy ears to improve a creature's ability to hear bugs that are hiding.
Fitness
- Fitness is an organism's ability to survive, find a mate, and produce viable offspring.
- The fittest organism depends on the environment it lives in.
- The fittest individual is not necessarily the strongest, fastest, or biggest organism in a population.
Biological Magnification
- The concentration of toxins and heavy metals increases as they move up a food chain.
- The top predators in the food chain are most affected and exposed.
- A true story example is presented with the usage of DDT to control mosquitoes and unforeseen side effects.
- DDT is a persistent toxic chemical.
Co-evolution/Co-adaptation
- Co-evolution and co-adaptation are evolutionary processes where two or more species influence each other's evolution.
- An example is observed in monarch butterflies and birds.
- Monarchs are not palatable to birds, while mimicking the appearance of the toxic organism gives a similar advantage.
- Humans can alter species, like GMO's.
Artificial Selection
- Artificial selection is the process where humans choose desirable traits in organisms and breed them to pass on those traits.
- Examples given with Corn, and IGF-1 levels in dogs.
Mesocyclops
- Mesocyclops are a type of zooplankton that can be used for biological pest control.
- The use of mesocyclops is environmentally and economically sustainable to consider before using them in natural pest control.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
This quiz covers key topics from the SC253 course, including discussions on evolution, biological magnification, and case studies like 'The Day They Parachuted Cats into Borneo.' Students will demonstrate their understanding of ecological concepts through panel presentations and peer reviews scheduled for November.
