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WorksheetsGenetics Test Review
Total questions: 35
Worksheet time: 20mins
Phenotype
structure found in the nucleus that
contains DNA
actual gene makeup of an organism (Bb)
the physical characteristic (black Fur)
the hidden trait, shown with lowercase
letters
the trait that shows, shown with upper
case letters
Genotype
structure found in the nucleus that
contains DNA
actual gene makeup of an organism (Bb)
the physical characteristic (black Fur)
the hidden trait, shown with lowercase
letters
the trait that shows, shown with upper
case letters
Dominant
structure found in the nucleus that
contains DNA
actual gene makeup of an organism (Bb)
the physical characteristic (black Fur)
the hidden trait, shown with lowercase
letters
the trait that shows, shown with upper
case letters
Recessive
structure found in the nucleus that
contains DNA
actual gene makeup of an organism (Bb)
the physical characteristic (black Fur)
the hidden trait, shown with lowercase
letters
the trait that shows, shown with upper
case letters
Chromosome
structure found in the nucleus that
contains DNA
actual gene makeup of an organism (Bb)
the physical characteristic (black Fur)
the hidden trait, shown with lowercase
letters
the trait that shows, shown with upper
case letters
xx
example of Heterozygous genotype
example of Homozygous recessive genotype
example of Homozygous dominant genotype
Study of Heredity, passing of traits from
parent to child
one gene from a gene pair
Rr
example of Heterozygous genotype
example of Homozygous recessive genotype
example of Homozygous dominant genotype
Study of Heredity, passing of traits from
parent to child
one gene from a gene pair
BB
example of Heterozygous genotype
example of Homozygous recessive genotype
example of Homozygous dominant genotype
Study of Heredity, passing of traits from
parent to child
one gene from a gene pair
Genetics
example of Heterozygous genotype
example of Homozygous recessive genotype
example of Homozygous dominant genotype
Study of Heredity, passing of traits from
parent to child
one gene from a gene pair
Allele
example of Heterozygous genotype
example of Homozygous recessive genotype
example of Homozygous dominant genotype
Study of Heredity, passing of traits from
parent to child
one gene from a gene pair
What is the basic function of chromosomes?
Releasing oxygen gas
Serving as a site for photosynthesis
Eliminating waste from cells
Storing genetic information
Which of these are considered inherited traits?
Eye shape
Face shape
Hair type
All of the above
Of the following, which represents a homozygous recessive genotype?
BB
Bb
bb
b
Which type of inherited trait is always expressed in the phenotype if it is present?
Recessive
Dominant
Gene
Chromosome
The drawing represents a pair of chromosomes.
The area labeled “bands” shows the location of _____.
Egg cells
Genes
Sperm cells
Chromosome
The diagram shows the offspring of a white mouse and a gray mouse. All of the offspring are gray.
Which is a correct gene cross for the parents shown in the above diagram?
GG X GG
gg X gg
GG X gg
Gg X Gg
Use the image.
If two heterozygous gray (Gg) mice mated, what percent of their offspring would be white fur?
25%
50%
75%
100%
In a Punnett square, a capital letter represents what type of allele?
Recessive
Dominant
Homozygous
Heterozygous
The table shows a model of human inheritance:
The parent whose genotype is aa _________.
Must be dominant
Has a straight hairline
Has a peaked hairline
May have AA offspring
The table shown for the question is called a _.
Punnett Chart
Punnett Equation
Punnett Key
Punnett Square
The “Aa” genotype is _____________.
Heterozygous
Monohybrid
Homozygous
Recessive
The table shows a monohybrid cross (Crossing one trait at a time). In guinea pigs, black hair color is dominant (B) and white hair color is recessive (b). What hair color are the guinea pigs’ offspring?
100% Black
100% White
75% Black and 25% White
50% Black and 50% White
Cody crosses a plant producing wrinkled peas with a plant producing smooth peas. Weeks later, he discovers that all the offspring plants have smooth peas. Cody drew the Punnett square above to show the genotypes of the offspring plants.
What is the dominant allele in the pea plants used in Cody’s experiment?
Smooth peas
Wrinkled peas
Neither smooth nor wrinkled peas
Both smooth and wrinkled peas
Cody crosses a plant producing wrinkled peas with a plant producing smooth peas. Weeks later, he discovers that all the offspring plants have smooth peas. Cody drew the Punnett square above to show the genotypes of the offspring plants.
Which phenotype(s) describe(s) the offspring plants in Cody’s Punnett square?
4 smooth
4 wrinkled
2 smooth and 2 wrinkled
3 smooth and 1 wrinkled
The following result were observed from a mating between two black and white speckled cats:
5 black cats, 10 black and white speckled cats, and 5 white cats.
Which of the following BEST describes the relationship between alleles of the coat color gene?
Linked
Mendelian
Codominance
Incomplete domiance
A mating between heterozygous flowers where the offspring are the following phenotypic ratio:
15 red flowers, 32 pink flowers and 15 white flowers.
Which of the following BEST describes the situation?
These traits are from multiple alleles.
These traits show incomplete dominance
These traits show complete dominance
The heterozygous flowers were all red.
Alleles that are both expressed in an offspring are considered _____________.
Complete dominance
Codominance
Incomplete dominance
Mutations
We are trying to view a slide that has DNA from a strawberry. What will be the total magnification when you are using the 4x objective lens?
4X
10X
40X
100X
In the news, fruit flies develop a mutation on one of their sex-linked genes. In the experiment, we tested to see if the radiation in the air will affect the amount of fruit fly offspring to be produced. Identify the DEPENDENT variable in your experiment.
Radiation in the air
Amount of fruit flies produced
Amount of food
None of the above
In the news, fruit flies develop a mutation on one of their sex-linked genes. In the experiment, we tested to see if the radiation in the air will affect the amount of fruit fly offspring to be produced. Identify the INDEPENDENT variable in your experiment.
Radiation in the air
Amount of fruit flies produced
Amount of food
None of the above
In testing whether plants that are watered daily will grow if you play music for them on a daily basis, which of the following would be the control group?
A group of plants in a dark room.
A room that has no plants but receives a little bit of light.
A group of plants that are watered daily and receive ample light in a room with the music playing.
A group of plants that are watered daily and receive ample light in a room with no music playing.
In an experiment, eggs were boiled at different temperatures to see how quickly they would cook. Which of the following is the independent variable for this experiment?
Cooking time
Different temperature used for boiling
How quickly the eggs are cooked
The eggs
Which of the following rules should be followed in the science lab?
If you break something, the student must pick the glass up.
Taste the unknown substance to see if we can use it in the experiment.
Wear goggles during the frog dissection at all times.
Visit the closet to add additional chemicals to the experiment.
You have accidentally broken a test tube and spilled a chemical on the table. Which of the following best explains what you should do?
Use water and paper towels to clean up the spill; place the broken test tube in the disposal container specified by the teacher for sharp object.
Throw the glass into the nearest trash bin and let the spill air-dry.
Quickly dispose of the glass, wipe up the spill with nearest cloth.
Caution your lab partner to avoid the area while you inform the teacher of the small accident.
What process transfers genes from one organism and inserts into the DNA of another organism?
Selective breeding
Genetic engineering
Inbreeding
Hybridization
