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QCE 2 2014 Test B
Test Description: This is 10 questions from QCE #2 2014
Instructions: Answer all questions to get your test result.
1) The inheritance of a trait in humans is best described as being determined by
A
one or more pairs of alleles
B
a single allele
C
one pair of chromosomes
D
the sex chromosomes of the offspring
2) In pea plants, the allele for round seeds (R) is dominant to the allele for oval seeds (r). In a cross between two heterozygous plants, what percentage of the offspring will have round seeds?
A
75%
B
25%
C
50%
D
100%
3) In pea plants, the allele for round seeds (R) is dominant to the allele for oval seeds (r). In a cross between two heterozygous plants, what percentage of the offspring will have oval seeds?
A
25%
B
50%
C
75%
D
100%
4) In pea plants, the allele for round seeds (R) is dominant to the allele for oval seeds (r). In a cross between two homozygous round plants, what percentage of the offspring will have round seeds?
A
75%
B
25%
C
50%
D
100%
5) In pea plants, the allele for round seeds (R) is dominant to the allele for oval seeds (r). In a cross between a heterozygous plant and a homozygous oval plant, what percentage of the offspring will have round seeds?
A
25%
B
100%
C
50%
D
75%
6) Which of the following is an example of codominance in genetic traits?
A
a color-blind woman and a man with normal vision produce a color-blind son
B
an orange cat and a black cat produce an orange-and-black kitten
C
a tall pea plant and a short pea plant produce a tall pea plant
D
a blue-eyed man and a brown-eyed woman produce a blue-eyed child
7) Mutations within a DNA sequence are
A
unnatural processes that always affect the phenotype
B
unnatural processes that are harmful to genetic diversity
C
natural processes that produce genetic diversity
D
natural processes that always affect the phenotype
8) Which statement about DNA is correct?
A
a child's DNA will be unrelated to the mother's or father's DNA
B
a female child's DNA will exactly match the mother's DNA
C
a child's DNA will show similarities to both the mother's and father's DNA
D
a male child's DNA will exactly match the father's DNA
9) Multicellular organisms are composed of cells that vary in appearance. What is the most likely reason cells in organisms have different shapes?
A
to perform different roles
B
to perform similar roles
C
to work at similar rates
D
to work at different rates
10) Which of the following shows an increase in complexity of the levels of organization in living things?
A
cells, tissues, organisms, organs, and systems
B
cells, tissues, organs, systems, and organisms
C
tissues, cells, organs, organisms, and systems
D
tissues, organs, cells, systems, and organisms
*select an answer for all questions
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