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AP Biology Unit 7 Material Flashcards | StudBud
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AP Biology Unit 7 Material
AP Biology Unit 7 Material
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Use this to study for block final
Flashcards
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Questions
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Answers
1
Sexual dimorphism has arisen as a result of ____.
stabilizing selection
sexual selection
kin selection
heterozygote superiority
2
A monophyletic group has how many common ancestors?
many
3
2
1
3
The tailbone of humans is an example of a(n) ____
accidental feature
vestigial feature
great chain of being
developing feature
4
Scientists began to question the perfection of the “great chain of being” partially because of their studies in ____.
meteorology
astrobiology
comparative morphology
uniformity
5
____ is the study of body plans and structures among groups of organisms.
Evolution
Comparative morphology
Molecular archeology
Embryology
6
Thomas Malthus proposed that ____.
the food supply increases faster than the population
the food supply and population increase at the same rate
the population increases faster than the food supply
artificial selection is the key to evolution
7
If the frequency of a gene in a population at genetic equilibrium is 40%, in the next generations, gene frequency is ___
40 percent
20 percent
80 percent
2pq
8
Darwin's theory says, in part, that individuals with certain traits have an increased competitiveness. What causes this?
mutations post birth
inheritance
adaptation to stress
development over a lifetime
9
The most important evidence that Darwin used to develop his theory of natural selection came from ____.
the Argentine pampas
the Galápagos Islands
Australia and New Zealand
his boyhood neighborhood in England
10
What is the type of speciation that can occur in an instant with a change in chromosome number?
sympatric
behavioral
ecological
mechanical
11
Darwin’s exposure to Lyell gave him insight on the ____.
enormous lengths of time required for geologic events
existing evidence from fossils
soundness of Lamarck's theories
record of catastrophic changes that encouraged evolution
12
Which individuals will be LEAST favored when selection pressures acting on a population result in stabilizing selection?
the intermediate individuals within the range of variation
individuals distributed randomly within the range of variation
individuals at the upper end of the range of variation only
extreme individuals at both ends of the range of variation
13
Disruptive selection occurs when
the extremes of the population have a better chance to survive.
humans determine which organisms will survive.
the extremes of the population have a lesser chance to survive.
the environment controls which organisms will survive.
14
Allopatric speciation requires ____.
physical separation
physical diversity
behavioral diversity
accelerated gene flow
15
What is the term for a group of organisms of the same species that occupies a specified area?
Polyploids
Species
Population
Individuals
16
The study of the distribution of animals and plants around the world is ____.
ecology
biogeography
natural history
diversity
17
The idea that geologic processes have formed Earth's surface by repeating the same actions over and over is known as ___
the theory of catastrophism
plate tectonics
the theory of uniformity
continental drift
18
When a population goes through a bottleneck, ____.
extinction rates decrease
natural selection decreases in intensity
mutation rates increase
genetic drift is likely to occur
19
Natural selection results in changes in ____.
individuals
populations
phyla
kingdoms
20
The persistence of the sickle-cell anemia allele in some African populations is the result of ____.
the advantage of the heterozygous form over the homozygous forms
nonrandom mating
a high rate of mutation of the normal allele to the sickle-cell anemia alle
a decline in the occurrence of malaria in Africa
