Podcast
Questions and Answers
What is the main mechanism by which organisms develop adaptations to their environments?
What is the main mechanism by which organisms develop adaptations to their environments?
- Natural selection (correct)
- Mutation
- Genetic drift
- Gene flow
How do taxonomic classifications change over time?
How do taxonomic classifications change over time?
- Due to new discoveries and analysis of DNA (correct)
- According to organism size
- Based on geographic location
- Through random selection
In the Linnaean system, what level of classification ranges from kingdom down to species?
In the Linnaean system, what level of classification ranges from kingdom down to species?
- Domain
- Taxon (correct)
- Phylum
- Order
What is the main reason for using a standardized system to classify organisms?
What is the main reason for using a standardized system to classify organisms?
How do scientists classify and identify organisms using dichotomous keys?
How do scientists classify and identify organisms using dichotomous keys?
What is the distinguishing factor used by scientists to classify organisms into different kingdoms?
What is the distinguishing factor used by scientists to classify organisms into different kingdoms?
What is the main focus of evolutionary theory?
What is the main focus of evolutionary theory?
Which type of evidence provides definitive proof of common ancestry among organisms?
Which type of evidence provides definitive proof of common ancestry among organisms?
What are structures shared through common ancestry referred to as?
What are structures shared through common ancestry referred to as?
Why do organisms appear unchanged (in stasis) for long periods of time in the fossil record according to the text?
Why do organisms appear unchanged (in stasis) for long periods of time in the fossil record according to the text?
What is the main mechanism responsible for producing changes in populations?
What is the main mechanism responsible for producing changes in populations?
Which basic component of natural selection states that organisms pass down traits to their offspring?
Which basic component of natural selection states that organisms pass down traits to their offspring?
