Genetics Test HN
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by Kathy Egbert
| 38 Questions
1
1
Which genotype below is heterozygous?
Aa
AA
Aaa
aa
2
1
An organism’s expressed physical trait, such as seed color, is called its:
Genotype
Phenotype
Homozygous
Gamete
3
1
If the allele for green pea pod color (G) is dominant over the allele for yellow pea pod color (g), which of the following genotypes would a plant with yellow pods have?
GG
Gg
gg
None of these
4
1
In corn plants, green (G) is dominant to yellow (g). What is the chance of two heterozygous corn plants producing yellow corn plants?
25%
50%
75%
100%
Refer to this image to answer #5.
5
1
What information is revealed in the portion of the karyotype above?
The individual displayed is a normal male.
The individual displayed is a normal female.
The individual displayed is a male with Down syndrome.
The individual displayed is a female with Down syndrome.
6
1
Which of the following describes an organism that has the genotype Bb?
Homozygous
Heterozygous
Inbreed
All of the above
7
1
Genes located on homologous chromosomes may have alternate forms that control different forms of a trait. These alternate forms of a gene are called _____.
Alleles
Centromeres
Phenotypes
Gametes
Refer to this image to answer #8.
8
1
What is the genotype in the bottom left-hand quadrant in the Punnett square shown above?
FF
Ff
fF
ff
9
1
A trait carried on the X or Y chromosome is said to be ________ inheritance.
Multiple allelic
Polygenic
Simple dominant
Sex-linked
10
1
The alleles contained in _____ produced by each parent are shown along the sides of a Punnett square.
Zygotes
Offspring
Gametes
Hybrids
11
1
A useful device for predicting the possible offspring of crosses between different genotypes is the _____.
Law of dominance
Law of segregation
Punnett square
Offspring-predictor-machine
12
1
Mendel's law of segregation states that during meiosis, the factors that control each trait separate and only _____ from each pair is/are passed to the offspring.
One factor
Two factors
The recessive trait
The dominant trait
13
1
A couple has two children, both of whom are boys. What is the chance that the parents' next child will be a boy?
0%
25%
50%
125%
Refer to this diagramme to answer #14-15.
14
1
How should the TOP ROW of the figure above read?
MMXX, MMXx, MmXX, MmXx
MMxX, MMxx, MmxX, Mmxx
mMXX, mMXx, mmXX, mmXx
mMxX, mMxx, mmxX, mmxx
15
1
What fraction of the cross shown above will be recessive for both traits?
1/2
1/4
1/8
1/16
16
1
The type of inheritance shown when a red-flowering plant is crossed with a white-flowering plant and only pink-flowering plants are produced is _____.
Inbreeding
Polygenic inheritance
Codominance
Incomplete dominance
17
1
The 23rd pair of chromosomes that differ in males and females are called _____.
Autosomes
Sex chromosomes
Multiple alleles
Polygenes
Refer to this diagramme to answer #18-21.
18
1
If individual III-2 marries a person with the same genotype as individual I-1, what is the chance that one of their children will be afflicted with hemophilia?
0%
25%
50%
75%
19
1
What type of inheritance pattern does the trait represented by the shaded symbols in the figure above illustrate?
Incomplete dominance
Multiple alleles
Codominance
X-linked
20
1
For the trait being followed in the pedigree, individuals II-1 and II-4 in the figure above can be classified as _____.
Homozygous dominant
Mutants
Homozygous recessive
Carriers
21
1
What is the relationship between individual I-1 and individual III-2 in the figure above?
Grandfather-granddaughter.
Grandmother-grandson.
Great aunt-nephew.
They play golf together occasionally.
22
1
An individual of phenotype XBXB marries an individual whose phenotype is XbY. What proportion of their male children will be colourblind?
0%
25%
50%
75%
23
1
When red and yellow spotted beetles are mated, 25% of the offspring are red, 50% are red and yellow spotted, and 25% are yellow. This trait is one controlled by _____.
Multiple alleles
Codominant alleles
X-linked genes
Polygenic inheritance
24
1
Because the gene for red-green colour-blindness is located on the X chromosome, it is not possible for a:
Carrier mother to pass the gene on to her daughter.
Carrier mother to pass the gene on to her son.
Colour-blind father to pass the gene on to his daughter.
Colour-blind father to pass the gene on to his son.
25
1
A dominant phenotype must have at least _____ dominant allele(s) present in the parent(s).
1
2
3
4
26
1
A man heterozygous for blood type A marries a woman heterozygous for blood type B. The chance that their child will have type O blood is _____.
0%
25%
50%
75%
27
1
A student researching new information for his Genetic disorder brochure could find the most current AND reliable information in a:
Cell biology textbook
Scientific journal
Newspaper
Popular news magazine
28
1
Which domain includes organisms whose cells have a nucleus?
Bacteria
Archaea
Archebacteria
Eukarya
Refer to this diagramme to answer #29.
29
1
This food chain can be found in the coastal waters of Virginia. The population of which organisms in the food chain would be the FIRST to decline if shrimp populations decrease due to overfishing?
Algae
Damselfish
Zooplankton
Barracuda
Refer to this diagramme to answer #30.
30
1
The graph below shows the changes of the size of a fish population over a period of time. The dashed line on the graph represents the:
Lifespan of the species.
Level at which extinction is reached.
Level of maximum biodiversity of the species.
Carrying capacity of the environment.
Refer to this information to answer #31-32.
The gene for colour-blindness in humans is found on the X chromosome. A boy has a colour-blind father.
31
2
Refer to the family described above. Will the boy definitely be colour-blind? Explain why or why not. (2 pts)You will create the Punnett square to support your explanation in #32.
32
2
Create a Punnett square to support your explanation in #31. (2 pts)Use the largest text possible.
Refer to this information to answer #33-36.
A man who is homozygous for type B blood has a child with a woman who is heterozygous for type A.
33
2
Create the Punnett square for the family described above. (2 pts)Use the largest text possible.
34
1
What are the odds that the child from the family described above will have blood type A? (1 pt)
35
1
What are the odds that the child will express the codominant blood type? (1 pt)
36
2
The couple finds out the child’s blood type is O. Is the child biologically theirs? Explain. (2 pts)
Refer to this image to answer #37.
37
2
As usual, some chucklehead in Mr. Ferzoco’s class left their worksheet behind. Luckily, they were picking their nose. After collecting DNA from the sample and creating a profile, the following DNA fingerprint gel was run. Which criminal (oops, student) committed the crime AND why? (2 pts)
38
8
Two parents are heterozygous for the widow’s peak hairline and heterozygous for unattached earlobes. Give the phenotypic probabilities of their offspring. Show all steps of your work. (8 pts)Use the largest text possible.
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