Evidence of Evolution

Front

Which of the following have a similar structure but have a different function in each organism?

• A dolphin fin and a shark fin
• Human fingernails and monkey fingernails
• Front leg of a cat and the wing of a bat
• The wing of a bumble bee and the wing of a bird

Back

Front leg of a cat and the wing of a bat

Front

Which of these claims is most likely true of two species that share a recent common ancestor?

Back

The two species share DNA sequences

Front

Humans breed dogs for certain traits. What is this practice called?

Back

artificial selection

Front

Which of these descriptions is an example of an unused body structure?

• a bat’s wing that enables it to fly
• the tiny leg bones found in snakes that have no legs
• the front legs of a dog that supports its weight as it walks and runs
• the tentacles of an octopus that aid it in movement and catching prey

Back

the tiny leg bones found in snakes that have no legs

Front

What is artificial selection?

Back

humans breed organisms for certain characteristics

Front

What best describes the tiny legs whales have?

Back

structures that have lost all or most of their function over time

Front

What type of evidence is most likely used to conclude that species with similar DNA are closely related?

Back

genetic evidence

Front

Which of these answers correctly pairs a scientific discovery with the type of evidence for evolution that it represents? Options: DNA comparison, embryological evidence; fossilized bones, genetic evidence; unused hind limbs, structural evidence; developmental patterns, fossil evidence.

Back

unused hind limbs, structural evidence

Front

Relationship between a human’s forearm and a bat’s wing: similar physical structures with similar functions, different physical structures with similar functions, similar physical structures with different functions, different physical structures with different functions.

Back

similar physical structures with different functions

Front

Which of these answers could best describe an investigation on animal population?

• a single cat that lives in her house
• all of the pets owned by her classmates
• all of the cats in her neighborhood
• the cats and dogs at a local animal shelter

Back

all of the cats in her neighborhood