WorksheetsAll Evolution Unit Review
Total questions: 19
Worksheet time: 38mins
Name
Class
Date
1.
Some organisms have genes that improve their ability to survive and reproduce. If the gene also help their offspring survive and reproduce, then which of the following will most likely increase?
a)
The number of genes in a species
b)
The frequency of genes in a population
c)
The frequency of genes in one individual
2.
A population of pigs with small, medium, and long snouts lives on an island together with burrowing termites. Pigs that have the longest snouts tend to survive better. Over time, most of the pig population is made up of individuals that have very long snouts. This is an example of which type of selection?
a)
directional selection
b)
disruptive selection
c)
stabilizing selection
d)
sexual selection
3.
If finches with average sized beaks increase in a population while finches with large and small sized beaks decrease, which pattern of natural selection has occurred?
a)
Directional selection
b)
Disruptive selection
c)
Stabilizing selection
d)
Sexual Selection
4.
If finches with large beaks and finches with small beaks increase in a population while finches with average sized beaks decreases, which pattern of natural selection has occurred?
a)
Directional selection
b)
Disruptive selection
c)
Stabilizing selection
d)
Sexual Selection
5.
This mechanism of evolution occurs when populations migrate.
a)
Extinction
b)
Gene flow
c)
Genetic drift
d)
Natural Selection
6.
Random change in allele frequency
a)
evo-devo
b)
genetic drift
c)
allele frequency
d)
gene pool
7.
What type of selection is depicted in the picture?
a)
stabilizing
b)
directional
c)
disruptive
d)
the answer is not here
8.
What type of selection?
a)
Directional
b)
Stabilizing
c)
Disruptive
9.
What kind of isolation occurs when two populations of birds have different courtship dances?
a)
geographic
b)
sexual
c)
temporal
d)
behavioral
10.
Which of the three graphs shows disruptive selection?
a)
A
b)
B
c)
C
11.
An earthquake causes an ocean channel top open and separate an island into two. the species on each section are now in
a)
geographic isoliation
b)
behavioral isolation
c)
disruptive selection
d)
temporal isolation
12.
What type of selection is shown?
a)
Directional
b)
Stabilizing
c)
Disruptive
13.
The flowers of pink tulips open in the morning, while the flowers of lavender tulips open in the early afternoon. The bees that pollinate these tulips cannot carry pollen back & forth between the two types of tulips because of their flowers being closed at different times of day. What type of reproductive barrier is this?
a)
behavioral isolation
b)
hybrid sterility
c)
temporal isolation
d)
mechanical isolation
14.
Which of the following is true of genetic drift?
a)
It can decrease genetic diversity in a population
b)
It is necessary in order for a population to be in equilibrium
c)
It can increase genetic diversity in a population
d)
It plays a much larger role in determining the genetic makeup of populations than natural selection
15.
What are sources of genetic variation?
a)
mutations
b)
genetic recombination
c)
mutations and genetic recombination
d)
mutations and migrations
16.
The idea that evolution seems to occur in spurts of time.
a)
coevolution
b)
gradualism
c)
adaptive radiation
d)
puntuated equilibrium
17.
The process by which all organisms change slowly over time because of slight gene variations is called
a)
convergent alliance
b)
artificial selection
c)
gradualism
d)
punctuated equlibrium
18.
T15. The hypothesis that evolution of a species occurs gradually over time as a slow and constant process is known as
a)
speciation
b)
punctuated equilibrium
c)
gradualism
d)
microevolution
19.
The hypothesis that evolution of a species occurs in periods of rapid change separated by periods of little or no change is called
a)
divergence
b)
gradualism
c)
punctuated equilibrium
d)
isolation
100 %
