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Questions and Answers
What does it mean if a particular trait is present in older fossils but disappears in more recent species?
What does it mean if a particular trait is present in older fossils but disappears in more recent species?
Which of the following statements is true about a group of boys practicing basketball?
Which of the following statements is true about a group of boys practicing basketball?
Which conclusion cannot be drawn from the graphs concerning medium ground finches over a 35-year period?
Which conclusion cannot be drawn from the graphs concerning medium ground finches over a 35-year period?
Which of the following statements is an example of typological thinking?
Which of the following statements is an example of typological thinking?
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Which treatment option is most likely to avoid the evolution of drug-resistant HIV?
Which treatment option is most likely to avoid the evolution of drug-resistant HIV?
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Study Notes
Evolution and Fitness
- Older fossils may show traits that disappear in recent species, indicating that individuals lacking those traits had higher fitness in changing environments.
- Biological fitness refers to an organism's ability to produce surviving, fertile offspring, not to permanent "higher" or "lower" statuses among species.
Physical vs. Biological Fitness
- Efforts to improve physical fitness, such as workouts, do not influence evolution as they do not change heritable traits or allele frequencies in a population.
- Evolution occurs at the population level, not within individuals.
Ground Finch Study Insights
- The conclusion that drought caused finch fatalities in 1977 cannot be confirmed solely from the data given on beak size and body characteristics.
- Graphs depict changes over time but lack direct evidence linking drought to starvation as the cause of death.
Typological Thinking
- Typological thinking stereotypes individuals based on assumed characteristics, disregarding variability.
- An example of this flawed thinking is the statement that all women share the same traits regarding height and preferences.
HIV Genome and Antiretroviral Treatment
- HIV contains an RNA genome that encodes essential enzymes: reverse transcriptase (RT) and protease (PR), crucial for viral replication.
- RT synthesizes DNA from RNA, while PR processes viral proteins.
- Dual treatment with moderate doses of nucleoside analogs (NA) and two different protease inhibitors (PI) simultaneously is a strategy likely to reduce the evolution of drug-resistant HIV.
Studying That Suits You
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Description
Study key concepts from Chapter 25 of Bio 151 with these flashcards. Explore the implications of fossil records and traits in evolution. This quiz will help reinforce your understanding of evolutionary biology principles.
