Quiz Submissions - Quiz 4
Attempt 1
Written: Jan 3, 2021 9:12 PM - Jan 3, 2021 9:54 PM
Question 1
How is it possible that a person can have blood
... [Show More] type AA, BO or AB, for example?
Question options:
there are two alleles, and a person gets all three, but only expresses two
there are three alleles, but a person only has two alleles
there are three alleles, and a person expresses all three copies
there are two alleles, but a person only has one allele
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Question 2
What is the process of cell division called in prokaryotes?
Question options:
Single mutation
Binary fission
Double fusion
Cytokinesis
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Question 3
What is the term for a cell's complement of DNA?
Question options:
gamete
nucleus
chromosome
genome
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Question 4
During which stage in interphase does DNA synthesis occur?
Question options:
Mitosis
G2 phase
S phase
G1 phase
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Question 5
In diploid organisms, chromosomes are in a matched pair. What is the term for these chromosomes?
Question options:
dissimilar
homologous
heterologous
unrelated
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Question 6
What is the purpose of checkpoints in the cell cycle?
Question options:
to keep any foreign DNA out of the cell
to make the division move faster
to maintain protein health in the cell
to ensure detrimental mutations are not passed on
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Question 7
Most animals and plants are diploid. What are cells containing two sets of chromosomes are referred to as?
Question options:
gametes
somatic
aneuploid
polyploid
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Question 8
During meiosis the 23 pairs of human chromosomes assort independently. Approximately how many possible gametes result from a single person?
Question options:
23 million
8 million
23,000
8,000
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Question 9
Humans would best be described as having which of the following life cycles?
Question options:
diploid-dominant
haploid-dominant
alternation of generations
gametophyte dominant
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Question 10
In what phase of meiosis does Independent assortment of homologous chromosomes occur?
Question options:
meiosis II
interphase
meiosis I
cytokinesis
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Question 11
What is an individual with an incorrect number (2n-1 or 2n+1) of chromosomes called?
Question options:
autosome
euploid
aneuploid
polyploid
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Question 12
What is an individual with the correct number (2n) of chromosomes called?
Question options:
aneuploid
autosome
euploid
polyploid
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Chromosomal abnormalities can occur in any species; remember, poly- means more, aneu- means not good and autosomes are chromosomes not associated with sex. Review Chapter 7.
Question 13
What is the genetic make-up of an organism is described as?
Question options:
alleles
zygotes
genotype
phenotype
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Question 14
In a cross between two heterozygous (Aa) individuals, what is the likely percentage of the offspring that will be heterozygous?
Question options:
75%
100%
50%
25%
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Question 15
What is incomplete dominance?
Question options:
in a heterozygote, one trait will conceal the presence of another trait for the same characteristic
when in a heterozygote, expression of two contrasting alleles such that the individual displays an intermediate phenotype
a phenomenon in which alleles that are located in close proximity to each other on the same chromosome are more likely to be inherited together
an interaction between genes such that one gene masks or interferes with the expression of another
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Review Chapter 8.
Question 16
How many unique gametes could be produced through independent assortment by an individual with the genotype AaBbCc?
Question options:
4
8
1
2
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A gamete would receive one copy of each allele – meaning either A or a, B or b, C or c – and the combination of the three is what we are looking for. Review Chapter 8.
Question 17
Mendel made crosses between parental lines of pea plants that were homozygous for different alleles of the traits he was studying. When crossing two parents, the F1 generation were all what?
Question options:
recombinants
heterozygous
homozygous dominant
homozygous recessive
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Question 18
How many unique gametes could be produced through independent assortment by an individual with the genotype AABbCC?
Question options:
1
2
8
4
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Question 19
What is the result of mitosis?
Question options:
Two cells become four identical cells
One cell becomes two identical cells
Two cells become four non-identical cells
One cell becomes two non-identical cells
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Question 20
What is the theme behind Mendelian inheritance?
Question options:
Traits are controlled by a single gene, and you get one copy from each parent.
All diseases are the result of mutations.
Even with peas, color and size are not predictable using a Punnett Square.
The majority of traits are recessive, so do not change often.
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Question 21
What is the purpose of a Punnett Square?
Question options:
it is a way to visualize the phenotype and genotype of a cross
it is a way to visualize only the phenotype in a population
it is a way to visualize only the genotype of a cross
it is a way to visualize the chromosomes in a population
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Question 22
What is the independent variable in the following hypothesis: bacterial growth in an incubator may be affected by temperature?
Question options:
incubator
temperature
the affect
bacterial growth
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Correct! The independent variable is the thing that changes in the experiment, and the dependent variable is what is being measured.
Question 23
Which of the following is NOT a reason why Wakefield's study on the connection between autism and vaccinations was flawed?
Question options:
the study was not replicable
the study acquired samples unethically and, quite possibly, illegally
the study had a small sample size
the authors committed deliberate fraud to support their hypothesis
the study demonstrated everyone's well being was taken care of
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Correct! There were many errors in Wakefield's study on autism, but considering everyone's health was not one of them.
Question 24
Which type of variable does not change during an experiment, and serves as a comparison point for all data points?
Question options:
independent
control
random
dependent
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Correct! There has to be one variable in the experiment that researchers compare the results of the experiment to, so that accurate conclusions can be made.
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Attempt Score:
63 / 72 - 87.5 % [Show Less]