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WorksheetsRevision G12 Ch 11
Total questions: 22
Worksheet time: 11mins
The process in which two or more species evolve in response to changes in each other is ...
convergent evolution
divergent evolution
coevolution
Sharks and dolphins are examples of which evolution?
convergent evolution
divergent evolution
coevolution
When timing prevents reproduction between populations ...
geographic isolation
behavioral isolation
temporal isolation
Occurs after a big event that greatly reduces the size of a population.
Bottelneck effect
Founder effect
Gene flow
Occurs when both extreme phenotypes are favored by selection.
Stabalizing selection
Directional Selection
Disruptive Selection
Natural Selection
Where does mutation happen?
body cells
brain cells
sex cells
all kind of cells
Hybridization is the crossing of two similar species that share common genes.
true
false
When gene flow increases,genetic variation…..
decreases
stays the same
increases
By favoring one extreme phenotype, disruptive selection can lead to the formation of new species.
true
false
After genetic drift what happens to the number of alleles?
increases
decreases
stays the same
How will gene flow affect the neighboring population?
They will have similar genes becoming more related
They will die
No effect
More competition
They will die
Which animals are in divergent evolution?
Dolphins and sharks
Dogs and elephants
Crabs and snails
Bats and birds
All of the alleles in all the individuals that make up a population:
Gene pool
speciation
genetic drift
Gene flow
What are the two main sources of genetic variation:
Mutation and recombination
gene pool and founder effect
Genetic drift and bottleneck effect
founder effect
The rise of a new species from one existing species
Gene pool
Gene flow
speciation
genetic drift
Allele frequency:
All of the alleles in all the individuals that make up a population
Change in allele frequencies in a population over generations; happens on a small scale
How often a form of a gene appears in a gene pool
Natural selection that favors intermediate variation of a phenotype
Which scientific concept did Charles Darwin and Alfred Wallace independently discover?
mutation
natural selection
overbreeding
sexual reproduction
Which of the following situations will lead to natural selection?
The seeds of two plants land near each other and one grows larger than the other.
Two types of fish eat the same kind of food, and one is better able to gather food than the other.
Male lions compete for the right to mate with females, with only one possible winner.
all answers are correct
What is the difference between micro- and macroevolution?
Microevolution describes the evolution of small organisms, such as insects, while macroevolution describes the evolution of large organisms, like people and elephants.
Microevolution describes the evolution of microscopic entities, such as molecules and proteins, while macroevolution describes the evolution of whole organisms.
Microevolution describes the evolution of populations, while macroevolution describes the emergence of new species over long periods of time.
Microevolution describes the evolution of organisms over their lifetimes, while macroevolution describes the evolution of organisms over multiple generations.
Population genetics is the study of ....
how genes affect embryological development
How allele frequencies in a population change over time
populations of cells in an individual
the rate of population growth
In which of the following pairs do both evolutionary processes introduce new genetic variation into a population?
natural selection and genetic drift
mutation and gene flow
gene flow and genetic drift
natural selection and gene flow
The fact that DNA sequences are more similar in more closely related organisms is evidence of what?
optimal design in organisms
mutation
adaptation
descent with modification
