Quiz by Clifford Traylor
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Natural selection acts on the phenotype rather than genotype.29truefalse
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Natural selection acts on the phenotype rather than genotype.truefalseTrue or False300sEditDelete
In Charles Darwin’s time, many people thought that Earth and its living things were formed about a few thousand years ago.truefalseTrue or False300sEditDelete
On the Galápagos Islands, Charles Darwin observed
somewhat similar species, with traits that suited their particular environments.
completely unrelated species on each of the islands.
species completely unrelated to those found in South America
species identical to those found in England300sEditDelete
The two main sources of genetic variation are
directional selection and disruptive selection
gene shuffling and mutations
genotype and phenotype300sEditDelete
The species of finches that Charles Darwin found on the Galápagos Islands displayed different structural adaptations. One of the adaptations that Darwin noted was the
birds’ different-shaped beaks.
number of eggs in each bird’s nest
similarities of the birds’ embryos
somewhat similar species, with traits that suited their particular environments.300sEditDelete
An adaptation is an inherited characteristic that can be
physical or behavioral
the result of artificial selection
physical or geographical
acquired during the organism’s lifetime300sEditDelete
Which statement about the members of a population that live long enough to reproduce is consistent with the theory of natural selection?
They will perpetuate unfavorable changes in the species
They are the ones that are best adapted to survive in their environment.
They tend to produce fewer offspring than others in the population
They transmit characteristics acquired by use and disuse to their offspring300sEditDelete
Darwin’s concept of evolution was NOT influenced by
his collection of specimens.
knowledge about the structure of DNA
his trip on the H.M.S. Beagle
the work of Charles Lyell.300sEditDelete
Which of the following statements describe what all members of a population share?
They are members of the same species.
They are geographically isolated from each other
They have identical genes.
They are temporally isolated from each other.300sEditDelete
The phenotypes for a typical polygenic trait can often be expressed as
a bar graph
a bell-shaped curve300sEditDelete
A change in a sequence of DNA is called a
single gene trait
If a table shows the percentages of adenine at 22 percent and guanine at 28 percent in a DNA sample. How much Thymine should you expect to find in the sample?
According to Darwin’s theory of natural selection, the individuals that tend to survive are those that have
the fastest offspring
the greatest number of offspring.
the ability to eat some plants
variations best suited to the environment.300sEditDelete
On the Galapagos Islands, Darwin also saw several different types of finch, a different species on each island. He noticed that each finch species had a different type of beak, depending on the food available on its island. The finches that ate large nuts had
lived on islands that had no vegetation
very thin long tongues
larger thicker beaks
long think beaks300sEditDelete
The diagram illustrates an embryonic stage of four organisms. Which of the following can be determined by observing the embryos in the diagrams?
the organisms are native to the same geographic area
the organisms belong to the same species,
The organisms share a common ancestor
The organism will all have tails later in life300sEditDelete
Most fossils form in
The first organisms on earth were most likely today's
Scientists who specialize in the study of fossils are called
In humans, the pelvis and femur, or thigh bone, are involved in walking. In whales, the pelvis and femur shown in Figure 15–1 are
example of fossils
examples of natural selection300sEditDelete
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