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WorksheetsJC Genetics and Evolution
Total questions: 14
Worksheet time: 9mins
Name
Class
Date
1.
What will most likely happen if a species can no longer produce offspring?
a)
It will become extinct.
b)
It will evolve into another species.
c)
It will move into a new environment and adapt.
d)
It will begin to mutate into another organism.
2.
Dark moths began to outnumber white moths in cities after the Industrial Revolution. What is the most likely reason for this change?
a)
Light-colored moths mutated into dark colored moths.
b)
Light-colored moths began to die due to overpopulation.
c)
Light-colored moths were less favored for survival in the new environment.
d)
Light-colored moths began to turn black because of factory pollution.
3.
Which term best describes a specially developed characteristic that enables an organism to live in a specific environment?
a)
adaptations
b)
natural selection
c)
survival of the fittest
d)
variations
4.
What role does genetic variation play in the evolution of species?
a)
It reduces the chance that species will possess characteristics well-suited for a changing environment.
b)
It increases the chance that species will possess characteristics well-suited for a changing environment.
c)
It allows multicellular organisms to change their traits during their lifetimes.
d)
It allows unicellular organisms to change their DNA after they die.
5.
Genes are located in which part of the cell?
a)
Vacuole
b)
Chromosome
c)
Ribosome
d)
Cytoplasm
6.
What will best fill in the quadrant indicated by the arrow?
a)
QQ
b)
Qq
c)
qQ
d)
qq
7.
Y = yellow and y = green. Given the blank Punnett Square, what will be the percent of yellow offspring?
a)
50% yellow; 50% green
b)
75% yellow; 25% green
c)
75% yellow and 25% green
d)
100% yellow
8.
One parent contributes the gene for blue eyes and another parent contributes the gene for brown eyes. The offspring have brown eyes. Which word describes the gene for BLUE eyes?
a)
hybrid
b)
recessive
c)
dominant
d)
pedigree
9.
If D = dimples and d = no dimples, then what are the alleles?
a)
dimples and no dimples
b)
DD, Dd, dd
c)
D and D
d)
D and d
10.
Which term refers to the process by which animals that are better suited to their environment will survive and reproduce?
a)
natural selection
b)
overproduction
c)
variation
d)
competition
11.
Which of the following is a cause of extinction?
a)
lack of resources
b)
competition between species
c)
loss of habitat
d)
all of the above
12.
Differences that exist naturally among members of a population or species___?
a)
mutation
b)
adaptation
c)
variations
d)
evolution
13.
Almost all populations have some variation.
a)
true
b)
false
14.
Change in a gene or chromosome
a)
evolution
b)
variation
c)
mutation
d)
adaptation
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