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WorksheetsMechanisms of Evolution Practice
Total questions: 40
Worksheet time: 36mins
How frequently an allele shows up in a population is referred to as
Gene Pool
Adaptation
Allele Frequency
Genetic Drift
When a small group leaves their mainland to found a new colony, this is considered as
Bottleneck effect
Adaptation
Founder effect
Cause and effect
A physical trait favored by an environmental change is called an
Possibility
Adaptation
Mutation
Extinction
When the population significantly decreases due to a natural disaster (meteor, hurricane, etc), this type of Genetic Drift is considered the
Bottleneck effect
Gene Flow
Founder effect
Allele frequency
What is the correct equation for calculating allele frequency?
Number of copies of allele of interest / Total number of alleles present
Total number of alleles present / Number of copies of allele of interest
Dominant allele / total number of alleles present
Total number of alleles present / Recessive allele
There are 10 "RR" alleles and 6 "Rr" alleles. What is the total number of alleles present? (1/3)
16
32
4
8
There are 10 "RR" alleles and 6 "Rr" alleles. What is the allele frequency of the R allele? (2/3)
75%
63%
81%
38%
There are 10 "RR" alleles and 6 "Rr" alleles. What is the allele frequency for the r allele? Round your answer to the nearest %. (3/3)
19%
81%
32%
64%
How many total number of alleles are present in this icon?
9
3
18
16
Calculate the number of W alleles present (round to the nearest whole).
57%
22%
78%
65%
Calculate the number of w alleles (round to the nearest whole).
16%
22%
78%
57%
How many total alleles are present in this icon?
10
12
20
2
How many of the R allele is present? Round to the nearest %.
70%
30%
67%
28%
How many of the r allele is present? Round to the nearest %.
70%
26%
62%
30%
In our mud worm experiment, the hurricane was a representation of -
Genetic Frequency
Bottleneck Effect
Gene Flow
Founder Effect
In the mud worm experiment, the worms on islands 1 and 2 migrated from the mainland to their new colonies. These two islands were a representation of the -
Founder Effect
Gene Flow
Bottleneck Effect
Frequency
In our mud worm experiment, Island 3 had an existing population whereas Islands 1 and 2 did not. Because of this, Island 3 represented the example of -
Adaptation
Genetic Drift
Allele Frequency
Gene Flow
Given that there are 18 total alleles in this icon, how many R alleles are seen?
10
12
8
20
Given there are 18 total alleles in this icon, how many r alleles are present?
10
8
12
6
What is the allele frequency of the R allele? Round to the nearest whole.
56%
44%
50%
78%
What is the allele frequency of the r allele? Round to the nearest whole.
100%
56%
44%
32%
Which type of selection is the image representing?
Directional Selection
Stabilizing Selection
Disruptive Selection
Which type of selection is represented by the image?
Directional Selection
Stabilizing Selection
Disruptive Selection
Bats are mammals, not birds, yet they have wings, like birds do. This similar characteristic of wings in unrelated species is an example of
Divergent Evolution
Convergent Evolution
Coevolution
Speciation
The Galapagos tortoises share a common ancestor, but different populations have different neck lengths as a result of adapting to different environments. This pattern of evolution is known as
Divergent Evolution
Convergent Evolution
Coevolution
Speciation
What pattern of evolution is demonstrated in this photo? (Hint: the bee and the flower have evolved in response to each other)
Divergent
Coevolution
Convergent
Speciation
All the alleles that appear in the same population is called ______
Gene Flow
Fitness
Gene Pool
Allele Frequency
A type of genetic drift that causes the population to become very small. It also greatly reduces the genetic diversity.
Bottleneck
Founder
Speciation
The number of times an allele appears in a population
Gene Flow
Fitness
Genetic Drift
Allele Frequency
Adaptations that result from natural selection are expected to increase the fitness of an organism. In terms of natural selection, describe fitness.
Being able to survive and move forward
Being able to reproduce asexually
Being able to survive, find a mate, and produce offspring
Being able to survive a natural disaster
How is genetic drift similar to natural selection?
Both cause changes in the gene pool population
They're not similar
They both wipe out populations
None of the above
Natural selection on beak size and shape is driven by available food (T/F)
True
False
Jaguars can have no tail, normal tails and long tails. Jaguars with no tails have a hard time balancing in the trees. Jaguars with very long tails are easier to be caught by a predator.
Which type of selection graph best represents the Jaguars type of selection?
Directional Selection
Stabilizing Selection
Disruptive Selection
The concept of gene flow is demonstrated when a cow is driven off from its herd, joins another herd, and reproduces. When the cow contributes to the gene pool of the new herd, which of these most likely increases?
Genetic Drift
Genetic Variation
Gene Flow
Bottleneck
Cheetahs capture prey by outrunning them over short distances. Over time, the fastest cheetahs have been more likely to survive and pass this characteristic to their offspring.
This is an example of -
Adaptations
Natural Selection
Allele Frequency
Genetic Drift
Which of the following most likely supports how giraffes evolved long necks?
More long necked giraffes survived to pass on their genes
More short necked giraffes survived to pass on their genes
Short necked giraffes modified their diets to evolve into a new species
It's because of Sam the giraffe from the video shown in class
A new predator of rabbits has been introduced within an ecosystem. This new predator runs faster than the native predators of rabbits. Which statement best describes what will most likely occur in the rabbit population due to the introduction of the new predator?
The rabbits will mutate their genes and express genes that increase their speed
Slower rabbits will develop stronger legs and pass that trait to their offsprings
Rabbits will mate and produce offspring with a different species that have faster runners
Faster rabbits will survive and reproduce, increasing the average speed of the rabbit population
Some organisms have genes that improve their ability to survive and reproduce. If the genes also help their offspring survive and reproduce, then which of the following will most likely increase?
The frequency of the genes in one individual
The frequency of the genes in the population
The number of genes in one chromosome
None of these are correct
Immigration (establishing a new home) or Emigration (leaving old home) is an example of
Gene Flow
Genetic Drift
Allele Frequency
Founder Effect
What is a random change in allele frequency in a population called?
Genetic Drift
Fitness
Speciation
Gene Pool
