36 Questions
Species found on two distant islands with similar environments are more closely related to each other than to species on the nearest mainland.
False
The process of evolution is a theory that lacks empirical evidence and is based on untested hypotheses.
False
In the scientific community, the term 'theory' is equivalent to a hypothesis and lacks empirical evidence.
False
Natural selection is a minor factor in the process of evolution, and its effects are not observable in nature.
False
The theory of evolution by natural selection is a widely accepted hypothesis that has not been thoroughly tested by experiment and observation.
False
The fossil record does not provide evidence for the process of evolution, and its significance is widely debated among scientists.
False
The theory of evolution by natural selection has become dogma in the scientific community.
False
According to Darwin's original theory, evolution is a very slow process.
True
The fossil record shows that dinosaurs originated 150-200 million years ago.
False
The accumulation of adaptations leads to the formation of new species in a relatively short period of time.
True
MRSA developed drug resistance due to the overuse of antibiotics.
True
The geographic distribution of early dinosaur fossils is expected to be narrow due to their recent origin.
False
The Onymacris unguicularis beetle's headstanding behavior is an example of a vestigial trait.
False
Descent with modification by natural selection can explain the formation of new species.
True
The Linnaean classification system is based on the principles of evolution.
False
Phylogenetic trees can be used to study the fossil record of extinct species.
True
The fossil record provides direct evidence of the evolution of new species.
False
Natural selection can lead to the extinction of a species.
True
Birds with large ______ were better able to survive the drought and reproduce successfully.
beaks
Microevolution is defined as a change in ______ frequencies in a population over time.
allele
Natural selection is the only mechanism of ______ evolution, improving the match between organisms and their environment.
adaptive
Mutation and sexual reproduction produce the genetic ______ that makes evolution possible.
variation
Mendel's particulate hypothesis of inheritance stated that parents pass on discrete heritable units (______) that retain their identities in offspring.
genes
Three mechanisms can cause ______ frequencies to change: natural selection, genetic drift, and gene flow.
allele
It is the ______, not the individual, that evolves.
population
One common misconception about evolution is that ______ evolve, in a Darwinian sense, during their lifetimes.
organisms
The finches with larger, deeper ______ could crack the large seeds and thus were able to survive the food shortage during the drought.
beaks
The ______ beak size in the population was larger than before the drought.
average
Finches with large, deep ______ were able to survive the food shortage during the drought.
beaks
The ______ population had evolved larger beaks by natural selection.
finch
New mutations can modify ______ frequencies, but the change from generation to generation is very small.
allele
Mutations can ultimately have a large effect on ______ frequencies when it produces new alleles that strongly influence fitness.
allele
The three mechanisms that directly alter ______ frequencies to bring about evolutionary change are natural selection, genetic drift, and gene flow.
allele
Individuals with variations better suited to the environment tend to produce more offspring than those with variations that are less well suited, resulting in ______ selection.
directional
The fruit fly Drosophila melanogaster has an ______ that confers resistance to several insecticides, including DDT.
allele
As a result of ______, alleles are passed on to the next generation in frequencies different from their relative frequencies in the present population.
selection
Test your understanding of Darwin's view of life and how it explains the evolution of species over time. Learn about the patterns of evolution and how it differs from the concept of 'just a theory'.
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