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WorksheetsGenetics and Adaptations Review
Total questions: 33
Worksheet time: 17mins
Name
Class
Date
1.
Which of the following mutations would most likely improve the chances that an organism will survive?
a)
A) A stronger scent that makes a frog easier to find
b)
B) Stronger leg muscles that allow a rabbit to jump away from danger
c)
C) A weaker scent that makes a flower less attractive to bees
d)
D) Weaker leg muscles that make a gazelle slower
2.
Which of the following traits would most likely improve the chances that an organism will survive and reproduce?
a)
Small size makes it less likely a bull will find a mate
b)
A giraffe with a shorter neck is unable to reach high tree branches
c)
A common type of housefly develops resistance to insect poison
d)
A deaf leopard is unable to hear the approach of hunters
3.
Adaptations can help a species
a)
Reproduce
b)
Defend
c)
Find food
d)
All of the above
4.
Which of the following traits would most likely improve the chances that an organism will survive and reproduce?
a)
Brightly colored scales, which make a fish easier to spot by its predators
b)
Poor vision, which makes it more difficult for an eagle to see its prey
c)
Bright Colors which attract bees to flowers
d)
Dull-colored feathers, which make it less likely that a bird will find a mate
5.
Behavioral adaptations are
a)
the things animals do to survive
b)
the physical characteristics of an animal or plant
c)
only found in mammals
d)
only found in humans
6.
During the winter months when resources such as food and water may be scarce, some animals
a)
go into estivation
b)
ignore their circadian rhythms
c)
go into hybernation
d)
use warning colorations
7.
What effect can a volcanic eruption have on climate?
a)
release the Earth’s thermal energy which makes the Earth cooler
b)
the ash traps the Earth’s thermal energy, which makes the Earth hotter
c)
the large amounts of lava released makes the Earth much hotter
d)
the dust and ash block the sun’s rays from entering the atmosphere which makes the Earth cooler .
8.
Researchers have found that many human activities produce carbon dioxide gas. Most scientists think that increased levels of carbon dioxide gas in the atmosphere will
a)
block thermal energy from the sun, resulting in an ice age
b)
Lead to an increased greenhouse effect and global warming
c)
reduce the greenhouse effect, resulting in milder climates
d)
result in warmer, drier conditions that will aid crop yields
9.
Which of the following statements is true about the variation?
a)
variation is caused by genes
b)
variation is caused by the environment
c)
variation can caused by both genes and the environment
d)
none of the
above
10.
Deciduous trees lose their leaves. This is in response to
a)
pollution
b)
temperature change
c)
amount of hervivores
d)
decreased precipitation
11.
If there is a shift in the environment, organisms will respond by __________ or they will become extinct.
a)
migrating
b)
adapting
c)
dying
d)
starving
12.
A toxin is introduced into a species that causes them to be sterile. This species will
a)
become overpopulated
b)
begin to act differently
c)
grow larger
d)
become extinct
13.
Where are the instructions for traits found?
a)
in meiosis
b)
in DNA
c)
in cell membranes
d)
in lysosomes
14.
Who is considered the father of genetics?
a)
Gregor Mendel
b)
Charles Darwin
c)
Walter Sutton
d)
Albert Einstein
15.
Chromosomes are found in
a)
the nucleus of prokaryotic cells
b)
plant cells only
c)
the nucleus of eukaryotic cells
d)
animal cells only
16.
The hereditary units in cells are called
a)
genes
b)
nuclei
c)
characteristics
d)
traits
17.
___________ is the study of heredity.
a)
biology
b)
genetics
c)
ecology
d)
cytology
18.
A sequence of DNA that codes for a specific trait is a
a)
gamete
b)
phenotype
c)
gene
d)
heterozygous
19.
Which term best describes this genotype: BB
a)
homozygous dominant
b)
homozygous recessive
c)
heterozygous
d)
none of these
20.
Which term best describes this genotype: Bb
a)
Homozygous Dominant
b)
Homozygous Recessive
c)
Heterozygous
d)
none of these
21.
Gregor Mendel crossed a true-breeding tall plant (TT) with a true-breeding short plant (tt). What are the possible phenotypes for the offspring?
a)
all tall
b)
all short
c)
50% tall, 50% short
d)
75% tall, 25% short
22.
Cross a heterozygous brown furred rabbit with a white furred rabbit. What is the probability that an offspring will have white fur?
a)
100%
b)
50%
c)
25%
d)
0%
23.
Two cats carry heterozygous, long-haired traits. When these cats are crossed, what will be the probability of one of their offspring having short hair?
a)
100%
b)
50%
c)
25%
d)
0%
24.
If having cystic fibrosis is a recessive disease, then what would be the genotype of someone that has cystic fibrosis?
a)
AA
b)
Aa
c)
aa
d)
none of these
25.
When two cats reproduce, two individual parent cells join together to form offspring. The resulting offspring is likely to
a)
express only recessive traits
b)
be an exact copy of its parents
c)
share some traits with both of its parents, but not be identical to either one of its parents
d)
not express a dominant gene
26.
What is an advantage of asexual reproduction?
a)
biodiversity
b)
unique mating behaviors
c)
organisms can be large
d)
amount of offspring produced
27.
Which type of reproduction creates the greatest biodiversity, and therefore the ability to survive changing environments?
a)
fragmentation
b)
asexual
c)
sexual
d)
cloning
28.
What do we call the process of choosing parent organisms for the characteristics that we want in their offspring?
a)
selective breeding
b)
reproductive selection
c)
natural selection
d)
natural breeding
29.
When farmers breed new plants, they choose the pollen from one variety of plant and place it onto the stigma of another variety of plant. What do we call this type of plant breeding?
a)
selective breeding
b)
reproductive selection
c)
natural selection
d)
natural breeding
30.
When a gardener takes a cutting from a plant he/she likes he has made a ___________.
a)
clone
b)
mutation
c)
new species
d)
new variety
31.
Organisms with thicker fur survive a harsh winter and are able to reproduce the next spring. This is an example of
a)
selective breeding
b)
environmental change
c)
natural selection
d)
mutation
32.
Natural selection causes
a)
species to change over time
b)
mutations to occur
c)
extinction
d)
species to become weaker over time
33.
The measure of how well an organism survives in its habitat is called
a)
fitness
b)
mutation
c)
carrying capacity
d)
equilibrium
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