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WorksheetsEvolution Review
Total questions: 15
Worksheet time: 8mins
natural selection can ONLY occur if
there is genetic variety
there is no genetic variety
humans select the traits for the offspring
a group of individuals cannot interbreed
Genetic variety is vital for species survival because
it increases the chance for populations to adapt to changing environments
it is more visually appealing to have a variety of traits
it reduces competition between species
it changes the amount of resources an individual needs to survive
Where does genetic variety come from?
recombination of genetic material in meiosis
copying DNA in mitosis
crossing over in mitosis
cytokinesis in meiosis or mitosis
natural selection acts on
acquired traits
inherited traits
This image shows a 49 million year old fossil of a ginkgo biloba leaf as well as a modern leaf from this tree. The lack of observable change between these two specimens is most likely due to what?
The fan shape is successful in a windy environment.
The ginkgo biloba is well adapted to its environment and has needed little genetic change across time.
Artificial selection eliminated any alternative traits from appearing.
The ginkgo mutated to have many different traits and then mutated back to its earlier form.
Humans do not have tails, but do have a structure called the coccyx which is also known as the tailbone. The tailbone of a human would be considered a ___.
analogous structure
genetic mutation
vestigial structure
random adaptation
Falcons have excellent eyesight. What adaptations would give the prey species of a falcon a better chance of survival?
brightly colored feathers
thick fur
small ears
coloring that allows them to camouflage
Which animal is the closest in evolutionary relationship to Chimpanzee?
human
chimpanzee
gorilla
orangutan
Beetles are known to have approximately 350,000 species. Some beetles are barely visible to the naked eye and others are as large as the human hand. Some are hunters, some are scavengers, and some are parasitic. Beetles can also be found in a variety of habitats. Which is most likely true about beetles?
They have mated with several different species of insects to acquire new traits.
They do not have any competition with other organisms.
They have been able to adapt to a wide variety of ecosystems.
Humans have intervened and selected traits that they want to see in beetle populations.
Which two organisms most likely have the most similar DNA sequences?
triceratops and stegosaurus
diplodocus and stegosaurus
tyrannosaurus and logosuchus
pseudosuchia and triceratops
Which results in changes in allele frequency of a population due to random chance?
gene flow
genetic drift
artificial selection
fossil records
What is reproductive isolation?
the inability for two groups to interbreed
humans selecting desirable traits
organisms who are best suited to their environments survive and produce offspring
change in allele frequency due to random chance events
Which would provide the best evidence for a common ancestor of modern day sharks and a fossil that was found and is believed to be approximately 12 million years old?
historical food webs showing possible common prey/predator relationships
illustrations that were produced in multiple geographic regions
fossil records and comparisons of amino acid sequences between shark species
comparison of shark and whale structures to determine if there are any analogous traits
Bat wings, dolphin flippers, and human arms all have similar skeletal structures. These are examples of ______ structures and suggest ______.
analogous, no common ancestry
analogous, common ancestry
homologous, common ancestry
homologous, no common ancestry
Which is NOT true about natural selection?
individual organisms evolve and change their genetic makeup
natural selection drives change in allele frequency over time
natural selection can select for or against traits
traits that help an organism survive in its environment are more favorable
