Paciulli FINAL BIO 181 NCSU Questions
and Correct Verified Answers
To the west of Wallace's Line in Southeast Asia are organisms related to Asiatic
species. To the east of the line, there is a mixture of species of Asian and Australian
origin. This is an example of:
✓ biogeography
Two members of the initial Amish migration to Pennsylvania in 1744 shared the
recessive allele for Ellis-van Creveld syndrome, which results in a long narrow chest and
shortening of the limbs. More Amish people have these traits than the surrounding
non-Amish population. This is an example of...
✓ the founder effect
Evolutionary changes within a species are most accurately referred to as:
✓ microevolution
Our ancestors had much bigger jaws than we do, which helped them chew a tough diet,
tear apart meat, etc. Their teeth also wore down quickly. Wisdom teeth (third molars)
grew later in life, and helped our ancestors continue to eat. Today, ~35% of people are
born without wisdom teeth. This is an example of:
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✓ evolution
The idea that most speciation is slow and uniforms is known as:
✓ gradualism
Drongo birds live in central Africa. One population is found in evergreen rainy forest
areas, while another population is found in open grassland areas. The two populations
live in two different habitats 150 feet apart, and do not interbreed. The _____ Species
Concept best explains this phenomenon.
✓ ecological
Selection pressure throughout earth's history has been most often exerted by...
✓ the environment
The first step of the scientific method is _____ .
✓ observation
People who are wealthy, and only marry people who are wealthy who have blond hair
and blue eyes are practicing a form of _____ mating.
✓ assortative
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Non-poisonous king snakes mimicking poisonous coral snakes is likely due to _____
✓ biogeography
All wasps have stingers. This thing in my hand is a wasp. Therefore, this wasp can
probably sting me! This is an example of _____ reasoning.
✓ deductive
We said that each level of life ...
✓ has emergent properties
The only source of new genetic variation is / are _____ .
✓ mutations
Although Jean-Baptiste Lamarck's work was important in the development of
evolutionary thought, he was wrong because he believed that characteristics were
_____.
✓ aquired
The large antlers of moose help them fight other males, to gain access to females.
✓ intrasexual selection
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Smaller teeth in all modern humans as our diets became less coarse.
✓ directional selection
Two distinctly different beak sizes occur in a single population of black-bellied seed
crackers (a finch species that lives in Cameroon, West Africa). The small-billed
individuals feed mainly on soft seeds, while the large-billed individuals feed mainly on
hard seeds.
✓ disruptive selection
The smallest unit capable of carrying out life functions is a / the
✓ the cell
Blue-footed boobies (a species of bird) select mates after an elaborate courtship
display. They will not mate with other boobies.
Indicate whether this an example of a prezygotic or postzygotic isolating mechanism,
by writing pre or post.
✓ pre
Blue-footed boobies (a species of bird) select mates after an elaborate courtship
display. They will not mate with other boobies.
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