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WorksheetsCh 16 - Evolution of Populations
Total questions: 35
Worksheet time: 18mins
Name
Class
Date
1.
Many genes have at least two forms, or ___________
a)
traits
b)
functions
c)
alleles
d)
partners
2.
A ________ is a group of individuals of the same species that interbreed.
a)
species
b)
population
c)
community
d)
ecosystem
3.
A ____________consists of all genes, including all the different alleles, that are present in a population.
a)
gene pool
b)
allele pond
c)
genetic equillibrium
d)
genetic drift
4.
The _____________ of an allele is the number of times the allele occurs in a gene pool, compared with the number of times other alleles for the same gene occur.
a)
founding
b)
percentage
c)
gene pool
d)
relative frequency
5.
In genetic terms, ____________ is any change in the relative frequency of alleles in a population.
a)
evolution
b)
genetic equillibrium
c)
speciation
d)
founder effect
6.
A ____________ is any change in a sequence of DNA
a)
mistake
b)
mutation
c)
mishap
d)
manipulation
7.
True or False: The effects of a mutation can always be seen.
a)
True
b)
False
8.
The number of _______ produced for a given trait depends on how many genes control the trait.
a)
Genotypes
b)
Muations
c)
Phenotypes
d)
Alleles
9.
A ___________trait is controlled by one gene that has two alleles.
a)
single-gene
b)
polyenic
c)
polytypic
d)
lone-allele
10.
How many phenotypes exist for a single-gene trait?
a)
1
b)
2
c)
3
d)
4
11.
Many traits are controlled by two or more genes and are called _______________ traits.
a)
single-gene
b)
polygenic
c)
polytypic
d)
lone-allele
12.
True or False: Polygenic traits can have many possible genotypes and phenotypes.
a)
True
b)
False
13.
A ____-shaped curve is typical of polygenic trait distribution
a)
mountain
b)
circular
c)
bar
d)
bell
14.
__________, not individual organisms, can evolve over time.
a)
Species
b)
Populations
c)
Communites
d)
Ecosystems
15.
Which colored lizard was more easily seen by predators?
a)
Brown
b)
Red
c)
Black
16.
Which lizard color increased in frequency because they were able to warm up faster?
a)
Brown
b)
Red
c)
Black
17.
When individuals at one end of the curve have higher fitness than individuals in the middle or at the other end, ________________ selection takes place.
a)
directional
b)
stablizing
c)
singular
d)
disruptive
18.
When individuals at the upper and lower ends of the curve have higher fitness than individuals near the middle, ____________ selection takes place.
a)
directional
b)
stablizing
c)
singular
d)
disruptive
19.
When individuals near the center of the curve have higher fitness than individuals at either end of the curve, ____________ selection takes place.
a)
directional
b)
stablizing
c)
singular
d)
disruptive
20.
A random change in allele frequency is called ____________.
a)
founder effect
b)
mutation
c)
genetic drift
d)
relative frequency
21.
When allele frequencies change due to migration of a small subgroup of a population it is known as the ________________.
a)
founder effect
b)
mutation theory
c)
genetic drift
d)
disruptive selection
22.
The _____________ principle states that allele frequencies in a population will remain constant unless one or more factors cause those frequencies to change.
a)
Darwin-Wallace
b)
Watson-Crick
c)
Hershey-Chase
d)
Hardy-Weinberg
23.
When allele frequencies remain constant it is called ______________.
a)
Evolution
b)
Genetic Equilibrium
c)
Genetic Change
d)
Genetic Drift
24.
For genetic equilibrium to be maintained, there must be __________ mating.
a)
Nonrandom
b)
Random
25.
For genetic equilibrium to be maintained, the population must be very _________.
a)
small
b)
large
26.
For genetic equilibrium to be maintained, there cannot be ______________ into or out of the population.
a)
communication
b)
cooperation
c)
movement
d)
parasites
27.
For genetic equilibrium to be maintained, there can be no _____________.
a)
parasites
b)
diseases
c)
water
d)
mutations
28.
For genetic equilibrium to be maintained, there can be no _______________ selection
a)
artifical
b)
natural
29.
___________ is the formation of new species.
a)
Mutations
b)
Speciation
c)
Artificial Selection
d)
Development
30.
A _________ is a group of organisms that breed with one another and produce fertile offspring.
a)
Species
b)
Population
c)
Community
d)
Ecosystem
31.
The _____________of two populations must become separated for them to become new species.
a)
Relative frequencies
b)
Gene pools
c)
Random mating
d)
Phenotypes
32.
_____________ isolation occurs when two populations are capable of interbreeding but have differences in courtship rituals or other reproductive strategies that involve behavior.
a)
Behavioral
b)
Substantial
c)
Temporal
d)
Geographic
33.
_____________ isolation occurs when two populations are separated by geographic barriers such as rivers or mountains.
a)
Behavorial
b)
Substantial
c)
Temporal
d)
Geographic
34.
___________ isolation occurs when two or more species reproduce at different times.
a)
Behavioral
b)
Substantial
c)
Temporal
d)
Geographic
35.
Which trait on the finches did Darwin study the most?
a)
Wings
b)
Feathers
c)
Beaks
d)
Talons
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