WorksheetsEvolution & Natural Selection
Total questions: 17
Worksheet time: 9mins
The operation of natural selection depends upon the fact that:
The strong always survive, whereas the weak always die.
Some individuals have a better chance to produce more offspring.
Mutations are always harmful.
Acquired characteristics are inherited.
Reproduction of all members of a species is virtually the same.
If the frequency of a recessive gene in a population under genetic equilibrium is 40%, what would you expect to be the frequency of the dominant gene in a population?
20%
40%
60%
80%
100%
Selection pressures acting on a population may favor:
Individuals at the left end of the range of variation.
Individuals at the right end of the range of variation.
Extreme individuals at both ends of the range of variation.
The intermediate individuals within the range of variation.
All of these.
The result of natural selection is changes in:
Individuals
Populations
Kingdoms
Phyla
Animals only
Using hair as the derived trait, which does not fit the clade?
Whale
Crocodile
Wolf
Elephant
Tiger
Which of the following would be a modern example of Lamarckianism?
A strain of houseflies resistant to insecticides emerges.
Squirrels separated by a river are found to be unable to interbreed.
A son is born with a portion of his right index finger missing—the same portion that was severed from his father’s hand in an accident.
A strain of houseflies resistant to insecticides emerges, and squirrels separated by a river are found to be unable to interbreed.
All of the choices are examples of Lamarckianism.
Which of these is necessary for natural selection to occur?
A desire to change
Asexual reproduction
Environmental stability
Genetic variation
Geographic isolation
The wisdom teeth in humans seem to have no function. Some people are even born without them and they never come in. We once used our wisdom teeth when our diet differed from what it does today. Since this is a structure that we no longer use, wisdom teeth are considered a(n):
Homologous Feature
Analogous Feature
Vestigial Feature
Subsequent Feature
Depending on the reason why wisdom teeth evolved, it could be any of these terms.
A species of crab are found to be localized to one particular island. A hurricane comes through and destroys the island killing almost all of the crabs found on this island. A few survive the storm to reproduce. This is an example of:
Natural Selection.
Genetic Isolation.
The Bottleneck Effect.
The Founder Effect.
All of these.
The Hardy-Weinberg rule is:
Useful in determining the extent to which a sexually reproducing population is evolving.
Used to predict when genetic drift will occur in a sexually reproducing population.
Useful in determining the extent to which polyploidy is occurring in specific plant populations.
Used to predict when specific groups of organisms will become extinct.
All of these
Which of the following is the best definition of sympatric speciation?
Species that evolve due to geographical distance.
Mechanical isolation acts to prevent speciation.
Breeding behavior that prevents the organisms from breeding due to differences in their breeding time.
Ecological Isolation.
Evolutionary changes that creates two species occupying the same space.
A population of bacteria is treated with an antibiotic. How will variation in the population of bacteria increase the likelihood of survival?
Some of the bacteria may be resistant to the antibiotic.
It enables the population to increase rapidly.
It allows all of the bacteria to be resistant to the antibiotic.
The population will be better able to obtain a food source.
None of the above are correct.
A change in an organism’s DNA is called:
Vestigial
Adaptation
Allele
Mutation
Homologous
The “big bang” refers to:
an event marking the beginning of the universe.
the extinction of the dinosaurs.
the inevitable end of the universe.
the collision of the first galaxies forming the universe as it is today.
the inevitable death of large stars.
The fin of a whale and the wing of a bat look very different and have different functions, however, they developed form the same type of embryonic tissue. These types of structures are:
Vestigial
Analogous
Placental
Homologous
Dominant alleles
The first cells were
autotrophic
parasitic
anaerobic
aerobic
All of these.
Which of the following is NOT a way to study phylogeny?
Embryology
Fossil Evidence
Food Eaten
DNA
Anatomical Structures
