Evolution and natural selection

Front

___ are mistakes in the DNA that cause variation within a species.

Back

mutations

Front

Any inherited trait that gives an organism an advantage in its environment is called ___.

Back

an adaptation

Front

The evolution of a new species from an existing species is ____.

Back

speciation

Front

Organisms with the most beneficial traits will survive. This is commonly known as ___ (Options: theory of evolution, variations, survival of the fittest, ecosystems).

Back

survival of the fittest

Front

Why are advantageous traits more likely to be passed on to the offspring?

Back

Because parents with those traits can survive and reproduce better

Front

Individuals that are better able to cope with the challenges of their environment tend to

Back

Increase in population over time.

Front

The Asian shore crab invaded parts of the eastern coast of the United States about 15 years ago. The Asian shore crab preys on blue mussels. In the time since the Asian shore crab arrived, the average shell thickness of the blue mussel population has increased.

Which of the following is the most likely reason that this increase in shell thickness has occurred?

• Blue mussels with thick shells attract more crabs than mussels without thick shells.
• Blue mussels with thick shells grow in larger colonies than mussels without thick shells.
• Blue mussels with thick shells catch more food per day than mussels without thick shells.
• Blue mussels with thick shells survive and reproduce more successfully than mussels without thick shells.

Back

Blue mussels with thick shells survive and reproduce more successfully than mussels without thick shells.

Front

The fossil record provides evidence that

Back

Older species gave rise to more-recent species.

Front

The trees these moths used to live on were white, but have been covered in soot from coal factories. Which moth will be more successful in this environment? Options: Dark moth, Light moth, Both will be equally successful, Neither will be successful

Back

Dark moth

Front

Which statement is true about evolution?

Back

Darwin and Wallace both came up with the idea that species can transform into different species over time