Evidence of Evolution
Survival of the Fittest
Cause and Effect
100
Scientists infer that some species with similar body structures are related because...
They inherited them from a common ancestor, then evolved to become different
100
If the environment changes and a species adapts to the new challenges, does that mean individual organisms are changing? Explain!
Individuals do not change, but helpful traits (aka adaptations) become more common over time
100
If you see the phrases impacts, results in, leads to, led to, or affects, what should you write about?
cause and effect!
300
How do scientists use protein similarities to figure out evolutionary relationships?
Species with a more recent common ancestor have fewer amino acid differences
300
If there is a population of fish and the exam says "some individuals have a variation that allows them to blend in," what does that mean?
Some of the fish have genes that result in them being camouflaged, which allows them to hide from predators (or sneak up on prey)
300
A species of plants has variation in its leaf sizes. If there were many years of hot, dry weather, what would happen to the frequency of small leaves that reduce water loss? Why?
The percentage of plants with small leaves would increase. Having small leaves that retain water is helpful, so those plants would have a better chance of reproducing
500
Why would species A and B have more similar DNA, embryos, and body structures compared to species A and C?
A and B have a more recent common ancestor. They diverged more recently so they have accumulated fewer differences.
500
Why would a trait be very common in a population?
It helps individuals survive and reproduce in that environment
500
Name a behavioral adaptation that would be advantageous for a species of squirrels that live in a cold climate
making a nest, huddling for warmth, hiding from predators, storing food, etc.