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WorksheetsEvolution of Populations QUIZ
Total questions: 30
Worksheet time: 20mins
Which example shows disruptive selection?
Giraffe necks have become longer over time.
Medium-sized beaks in hummingbirds have decreased in frequency over time.
The peppered moth became less common in polluted environments.
Human babies with a very high or a very low birth mass have a higher mortality rate.
Fossil records show that black bears increased in size during the Ice Age and decreased in size with warmer temperatures. What type of selection do these changes in size represent?
Allopatric
Directional
Disruptive
Stabilizing
Which of the following defines a gene pool?
The sum of alleles in an individual of a given species
An organism's complete set of DNA, including all of its genes.
The degree of variation in alleles present in an interbreeding population
The total collection of different alleles in an interbreeding population
An example of behavioural isolation
Toads that mate at different times of the year
Plants that have separate pollination times
Birds that have specific songs
Turtles that are separated by a mountain
Babies birth weight is an example of
Disruptive selection
Adaptive radiation
Stabilizing selection
Directional selection
When members of a species breed, their offspring are able to produce offspring.
True
False
What is an inherited characteristic that helps organisms survive?
Evolution
Adaptation
Natural Selection
Extinction
A mistake or change that occurs in the DNA sequence is called a ______________________.
Extinction
Speciation
Mutation
Genetic Variation
Temporal isolation occurs when two different populations:
develop different mating behavior
become geographically separated
reproduce at different times
interbreed
The formation of new species is called
Speciation
Evolution
Natural selection
Mutations
When a species environment favors one dominant type of characteristic to the point that the other variations of the trait start to disappear is called _____.
disruptive selection
directional selection
stabilizing selection
unstabilizing selection
Which of the following is the best definition of species?
A group of organisms that lives in the same habitat
A group o organisms that exploit the same ecological niche
A group of organisms that can interbreed to produce viable offspring under natural conditions
A group of organisms that have the same appearance
Which of the following is an example of natural selection?
Bald Eagles are hunted until near extinction, population recovers.
Small group of iguanas floats to an island, starts a new population.
Red fox pups are more likely to survive in a snowy environment if they are born white.
Farmer chooses seeds from largest apples to plant next year. This results in larger apples from year to year.
A change in the genetic composition of a population as a result of descending from a small number of colonizing individuals is called:
founder effect
bottleneck
genetic drift
gene flow
Some female peacocks prefer males with large, colorful tales while other female peacocks prefer males with no tail at all. Females are now mating only with the tail they prefer. What type of reproductive barrier is this?
behavioral isolation
hybrid sterility
temporal isolation
mechanical isolation
individuals with alleles for an extreme type are more likely to survive and reproduce
stabilizing selection
directional selection
disruptive selection
genetic drift
the selection pressure favors the extreme phenotypes, dividing the population into 2 distinct groups
directional selection
stabilizing selection
geographic selection
disruptive selection
Individuals with intermediate traits are more likely to survive and reproduce
stabilizing selection
directional selection
adaptive radiation
disruptive selection
Aspen trees that are over 25 m tend to blow over in high winds; aspens that are under 15 m don't get enough sun. This is an example of...
directional selection
stabilizing selection
disruptive selection
artificial selection
sexual selection
Male elk use their antlers and size to compete with each other for the ability to mate with female elk. This is an example of...
directional selection
stabilizing selection
disruptive selection
artificial selection
sexual selection
Fish that produce more than 40,000 eggs have greater fitness than fish that produce less than this number. This is an example of...
directional selection
stabilizing selection
disruptive selection
artificial selection
sexual selection
