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20 Cards in this Set
- Front
- Back
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The term evolution is used to describe... |
heritable changes in characteristics of a population from one generation to the next. |
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Evolution on a small scale as it relates to changes in a single gene or allele frequency is called... |
microevolution |
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according to Thomas Malthus, food supplies tend to increase arthmetically while populations tend to increase exponenitally. (True or false) |
true.....This means populations will outgrow their food supply. |
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An important message from the work of Thomas Malthus that influenced Charles Darwin was... |
only a fraction of any population will survive and reproduce |
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The result of natural selection is... |
adaptation |
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Selective breeding results from programs designed to.... |
modify traits in domesticated species |
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Did Darwin develop his theory through experimentation, observation or other methods? |
Observation |
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The interlocking rib chge of titalike rosae suggests that transitional organism had lungs, which of the following traits were also found but not in the ancestral form (fish) |
primitive wrist and five finger bones |
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the island fox is only found on the channel islands off the coast. This species is not found on the mainland where the gray fox lives. This species could be considered? |
Endemic |
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The long snout of the giant anteater of South America an the Echidna of Australia are the result of different evolutionary lineages adapted to eating ants. This is an example of... |
convergent evolution |
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The underlying phenomenon that makes selective breeding or artificial selection is genetic variation. It is possible to have phenotype variation in natural populations because of... |
difference in alleles for a specific trait |
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fundamental similarity due to decent from a common ancestor is called... |
homology |
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What is Anatomical Homology? (homologus structures) |
Same set of bones in the limbs of modern vertebraes has undergone evolutionary changes to be used for many different purposes. |
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Darwin's concept of evolution "theory of descent with modification through variation and natural selection" can be demonstrated by... |
turtles hatch, one is the color of sand and the others are darker. Sand survives. When it enters the water it changes to a darker brown. Turtle grows and mate offspring that are also sand people when they are born. |
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Similarity in evolution unrelated groups due to adaption to similar environment is called? |
convergent evolution |
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When observing the skeleton of a snake, you see the remains of hip and hind leg bones associated with four legged animals. These bones are called... |
Vestigial Structures |
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anatomical structures thathave no apparent function but resemblestructures of presumed ancestors are called? |
Vestigial Structures |
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In humans, structures that show developmental homology |
temporary gill slits and bony tails |
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Species that differ as adults are often very similarduring embryonic stages. This is called? |
Developmental Homology |
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Some major changes that occurred in horse body size, foot anatomy and tooth morphology are hypothesized to be due to natural selection because of... |
Changes in global climates which results in changing environments from forest to grasslands |
