Straighterline Anatomy and Physiology 1 BIO201
Topic 4: Genetics Quiz 2023
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BIO201_MH_V3
Topic 4: Genetics
Started on Wednesday, June 7, 2023, 12:24 PM
State Finished
Completed on Wednesday, June 7, 2023, 12:52 PM
Time taken 28 mins 8 secs
Grade 35.00 out of 35.00 (100%)
Question 1
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The presence of a cellular clock, presence of "death genes" and damage to DNA or mitochondria are
all theories of _____.
Select one:
a. agingb. death
c. differentiation
d. cleavage
Question 2
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If an albino (aa) mates with a person homozygous for normal pigment (AA),
Select one:
a. half of the offspring are normal.
b. half of the offspring are albinos.
c. all offspring are homozygous normal.
d. all offspring are albinos.
e. All the offspring are normal but carriers.
Question 3
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A __________ is a display of the chromosomes of a somatic cell during metaphase of mitosis.
Select one:
a. karyotype
b. genome
c. gamete
d. locus
Question 4
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In humans, somatic cells have ____ chromosomes, while reproductive cells (gametes) have ____.
Select one:
a. 23; 46
b. 92; 46
c. 46; 23
d. 46; 69
e. 92; 23
Question 5
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A display of the chromosomes of a somatic cell during metaphase of mitosis is the
Select one:
a. karyotype.
b. autosome.
c. homolog.
d. locus.
e. genome.
Question 6
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Chromosomes that are NOT associated with sex determination are known asSelect one:
a. structural genes.
b. autosomes.
c. genotypes.
d. polygenic.
e. y-linked.
Question 7
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A different form of an allele at a particular locus that can have no effect to major effects on the
phenotype is a(n)
Select one:
a. allelic variant.
b. mutated allele.
c. polymorphism.
d. All of the choices are correct.
Question 8
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What term describes the inheritance of a trait which in the heterozygote has an intermediate
expression between either allele?
Select one:
a. Incomplete penetrance
b. Incomplete dominance
c. Complete dominanced. Codominance
Question 9
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Which of the following is an example of incomplete dominance?
Select one:
a. color blindness
b. major thalassemia
c. beta thalassemia
d. polymorphism
e. ABO blood groups
Question 10
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Genes on the X chromosomes are
Select one:
a. polygenic.
b. X-linked.
c. simple.
d. holandric.
e. Y-linked.
Question 11
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The process of meiosis will _____ as the gametes are produced.
Select one:
a. cut the chromosome number by 1/3
b. cut the chromosome number by 1/2
c. double the chromosome number
d. not change the chromosome number
e. triple the chromosome number
Question 12
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A person's height, intelligence, eye color, and skin color are examples of
Select one:
a. incomplete dominance.
b. complete dominance.
c. complete recessiveness.
d. codominance.
e. polygenic traits.
Question 13
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What genetic disorder is caused by having three chromosomes 21?Select one:
a. albinism
b. sickle-cell disease
c. hemophilia
d. Down syndrome
e. achondroplasia
Question 14
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What genetic disorder is a type of dwarfism characterized by shortening of the upper and lower
limbs?
Select one:
a. albinism
b. sickle-cell disease
c. hemophilia
d. Down syndrome
e. achondroplasia
Question 15
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What genetic disorder is the failure to produce clotting factors?
Select one:
a. albinism
b. sickle-cell disease
c. hemophiliad. Down syndrome
e. achondroplasia
Question 16
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What genetic disorder is the inability to produce normal hemoglobin?
Select one:
a. albinism
b. sickle-cell disease
c. hemophilia
d. Down syndrome
e. achondroplasia
Question 17
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Which of the following chromosome anomalies can be found in either sex?
Select one:
a. Turner's Syndrome (XO)
b. Klinefelter's Syndrome (XXY)
c. Down Syndrome (Trisomy 21)
d. Barker's Syndrome
e. They all can be found in either sex.
Question 18
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A mutation involving a single nucleotide is a _____ mutation.
Select one:
a. deletion
b. duplication
c. nondisjunction
d. point
e. aneuploidy
Question 19
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A mistake during segregation of chromosomes is called
Select one:
a. deletion.
b. duplication.
c. nondisjunction.
d. point mutation.
e. aneuploidy
Question 20
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Down Syndrome is an example of an aneuploidy calledSelect one:
a. monosomy 21.
b. trisomy 21.
c. monosomy 23.
d. trisomy 17.
e. disomy 21. [Show Less]