Evolution Study Cards Flashcards
(17 cards)
What happens when a person does not take antibiotics as prescribed?
They give bacteria a chance to reproduce, making it harder to fight off the infection.
How do antibiotics affect populations of bacteria?
They kill off harmful populations of bacteria but can also kill good bacteria.
What are variations?
Differences in genes, traits, or behaviors among members of a population.
What is Darwin’s theory of natural selection?
Animals with desired traits survive and reproduce, causing changes in the population over time.
What is Lamarck’s theory of change?
Organisms adapt to their environment and pass acquired traits to their offspring.
What is genetic variation’s role in natural selection?
It provides the diversity needed for some individuals to have advantageous traits.
What is an evolutionary tree?
A branched diagram representing a hypothesis for the evolutionary history of related organisms.
How do fossils help us understand evolution?
They provide evidence of extinct species and insights into their structure and behavior.
What information can trace fossils provide?
They can indicate how an organism moved, its speed, environment, and social behavior.
How did changes in whale ancestors occur according to natural selection?
Genetic mutations led to variations in leg size, with smaller legs providing survival advantages.
What does the presence of hair and hind limb buds in whale embryos indicate?
Whales evolved from land mammals.
Did whales evolve from land mammals or the other way around?
Whales evolved from land animals, as supported by fossil evidence.
Is it easy to identify animal types in early embryological images? Why or why not?
No, early embryos have similar features, making them look alike.
What relationships across different animal species can be seen in embryological data?
Similarities in early development stages that are not observable in mature animals.
Are we experiencing a 6th extinction?
Yes, the current extinction rate is significantly higher than the background rate.
Why is it important to finish an entire course of antibiotics?
To prevent bacteria from gaining resistance and ensure all harmful bacteria are killed.
Compare and contrast selective breeding and genetic modification.
Analysis
