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Evolution 23-24 Flashcards | StudBud
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Evolution 23-24
Evolution 23-24
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1
The Galapagos Islands are situated off the coast of
North America
West Indies
South America
South Africa
2
Darwin wrote that organisms with traits that are best suited to the environment will
Increase in number
Become extinct
Migrate in
Emigrate away
3
What is the process in which humans breed organisms for certain traits?
Artificial selection
Descent without modification
Inheritance
Natural selection
4
Mutations are important because they bring about
Death of the organism in which they develop
Benefits for the individual, not for the population
Hardy-Weinberg equilibrium within a population
Genetic variation needed for a population to evolve
5
Peacocks displaying their extravagant tail feathers is an example of
Cyclic Behavior
Learned Behavior
Courtship Behavior
Innate Behaviopr
6
The gradual change in species over time is
Evolution
Adaptation
Nucleotide
7
What variations are favorable depend on
The environment
How the individual feels at the time
If the bottleneck effect has occurred or not
How common the mutation that caused the trait is
8
What is the study of organisms at the early stages of development (before being born or hatching from an egg)?
DNA studies
Comparative Embryology
Fossil Record
Extinction
9
Natural selection results in change over time by acting on traits that are
New
Heritable
Better than the rest
Mutated
10
A bird building a nest and a spider spinning a web are both examples of
Innate Behavior
Courtship Behavior
Courtship Behavior
Innate Behavior
11
What did Charles Darwin observe in finch populations of the Galapagos Islands off the coast of South America?
Identical species on all the islands
The same species as North America
Different species on different islands
All species on one of the islands
12
The scientist who proposed natural selection was named ________________.
Francis Crick
Jean-Baptist Lamarck
Gregor Mendel
Charles Darwin
13
Which of the following is an example of a vestigial structure?
Thick fur on polar bears
Eye color
Opposable thumb
Goosebumps
14
When scientists look at genes from different species to determine their relatedness, they use
DNA sequence comparison
RNA sequences
Mitochondria
Chromosomal structures
15
The physical remains of a plant or animal preserved in rock or Earth’s crust are
Comparisons
Waterways
Fossils
Adaptations
16
A vestigial structure is a structure that ___________________.
No longer serves a purpose and provides evidence for a common ancestor
Appears only in the embryonic stage of life
Helps an organism survive in its environment
Is selectively bred for because of its value in society
17
Darwinian “fitness” best relates to the _______ of an individual within the population.
Brain Size
All of the above
Reproductive success
Muscular mass
18
All of the following are characteristics of the same species EXCEPT
They have the same heritable traits
They interbreed
There are many differences in their DNA
They live in the same habitat
19
_________________________________________ is the process of old species giving rise to new species.
Scientific Theory
Speciation
Artificial Selection
Adaptation
20
What is a gene pool?
Only the heterozygotes in a population
Only the homozygotes in a population
The sets of genes that make up a whole population
A physical pool of water where humans originated
21
What is a scientific theory?
A scientific claim that is backed by very little evidence
A scientific claim that is backed by a substantial amount of evidence
A hypothesis that many people believe to be true
An educated guess
22
In natural selection, the selective agent is
Humans
Mutations
Environment
Breeders
23
The small hind leg bones found in whales are examples of ____________.
Adaptation
Vestigial structure
Homologous structure
Analogy
24
Natural selection is a _____________________________________
Scientific Theory
Innate Behavior
Speciation
Courtship Behavior
25
A ____________ is a group of organisms that can breed and produce fertile offspring.
Phenotype
Variation
Bottleneck
Species
