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Which of the following have a similar structures 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
Which of these claims is most likely true of two species that share a recent common ancestor?
The two species have different developmental patterns
The two species have similar arms and legs
The two species share DNA sequences
The ancestors of each species looked very different
Humans breed dogs for certain traits. What is this practice called?
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
What is artificial selection?
humans breed organisms for certain characteristics
individuals that are better adapted to their environment
inherited traits in a population change over generation
Charles Darwin noted the differences among finches
Which of the following best describes the tiny legs whales have?
structures that grow and improve in function as they are used
structures that function at certain times of the year
structures that will become adaptations when the environment changes
structures that have lost all or most of their function over time
What type of evidence did was most likely use to reach his conclusion of species with similar DNA are closely related?
evidence from developmental patterns
Which of these answers correctly pairs a scientific discovery with the type of evidence for evolution that it represents
DNA comparison, embryological evidence
fossilized bones, genetic evidence
unused hind limbs, structural evidence
developmental patterns, fossil evidence
Which of these answers best describes the 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
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